How much does an architect cost in 2023?

Posted on April 19, 2023 by Sean Ronnie Hill

From extensions and loft conversions to building a completely new home, investing in a design and build project is a significant and often stressful undertaking that can open up many questions and routes to take.

For any type of project requiring structural and design work, one thing is certain there are a variety of professional specialists to call upon, with architects being one such group.

In this article, we look at those questions you may have on fees, and how much an architect costs in 2023 to offer clarification.

History of architect’s fees

Hiring a professional be it a lawyer, surveyor, or architect can lead to confusion around exactly how much you are going to be charged. Historically when it came to appointing an architect, things were relatively simple.

The Royal Institute of British Architects (RIBA) had for many years a scale of fees that all reputable architects would charge clients, this allowed those clients to then choose based on expertise and availability rather than price. Costs were calculated by looking at the size and complexity of a specific project and then taken as a percentage of the overall construction cost.

These fees were mandatory across the industry up until 1982 when the introduction of a more Conservative Government led competitive market made them advisory, and they were finally scrapped altogether in 2004.

Coupled with this was a change in the procurement of services in the construction industry with many design skills that had been traditionally associated with architects being placed with the builder/contractor, in essence altering the scope of work and services that the architect provided.

*_{Queen’s Park House drone photo of rear extension and garden, Queen’s Park NW London}*

How much does an architect charge?

Due to the varied nature of an architect’s scope of services and skill, along with the fact they can be involved at various stages of a building project or the whole cycle in line with the RIBA Plan of Work, there are three different types of fee.

Fixed Fee

A fixed fee which is a pre-agreed amount tends to work best when both the client and the architect have a clear understanding of the brief and deadlines in hand, and where there is little room for change when it comes to the nature of the appointment. For example, this could be designing, and preparing plans, construction drawings, and other documents required for a planning application.

Percentage Fee

This is based on a percentage of the construction costs as a whole and can range from 5% to 20% of your whole build cost dependent on the size of the project. In most cases, the bigger the project the lower the percentage.

It is most common on residential projects where the full scope of work is not clearly defined at the start as it allows for fee flexibility if the size or complexity of the undertaking changes. Fees are usually taken in the form of regular monthly payments. There is usually a minimum or maximum cap.

Clients may be concerned that some architects may look to keep construction costs high to charge heftier fees, but any reputable architect is bound by the code of conduct as set out by the Architects Registration Board which requires them to “be honest and act with integrity” and to ‘look after your clients’ money properly and be trustworthy’.

Time Charge Fee/Hourly Rate

This tends to be an hourly charge and can range from £50 to £160 dependent on the expertise of the architect and their location, as an example London based firms tend to have higher rates due to the cost of living, insurance, and transport costs.

A time charge fee is usually the best route when the scope of a project has not yet been clearly defined and some flexibility is required. For example, the client wants the architect to act as a contract administrator, but the number of hours is unclear at the beginning due to uncertainty of the chosen contractor and their experience. The total number of hours needed should be estimated at the start with an hourly cap agreed.

It is important to bear in mind that depending on the nature of the project there may be a combination of fees used especially if you are working with an architect from inception to completion and that as well as expenses there will be additional costs for disbursements made on behalf of a client such as payments for planning applications. VAT is also chargeable in addition.

Architects provide a professional service which is ultimately billed for by their time.

*_{Model of Clogher New Build Home, near Lisburn, Northern Ireland}*

How much to draw up architectural plans?

When people think of an architect one of the immediate skills that come to mind is in the drawing up of architectural plans that are required to gain planning permission, building control approval, and for contractor use during construction.

Some clients may wish to appoint an architect only for planning if for example, they intend to sell a site once planning is approved to benefit from the uplift in value, whereas for others it is just the start of the collaborative partnership.

In terms of costs, it is dependent on the specifics of the project and what is required but it tends to be around 30% – 40% of an architect’s fee. Drawing up plans for a planning application for an extension would tend to start at approx. £5,500, going up to around £18,000 for small-scale new build developments. When looking at plans for building regulation approval or tender drawings then costs would rise to approx. £8,000 for extensions and £13,000 for small-scale new builds.

It is important to remember that as part of this process, your architect will play a critical role in not only preparing and submitting your planning application but also in discussing the project in detail with you and planning officers as well as building control approved inspectors whilst providing guidance and advice around compliance.

Distinct stages of architect’s fees when considering budget

As we have touched upon the scope of an architect’s work can be considerable as are the services that each client may require. With each you can expect to pay a varying fee which will consider the level of deliverables, the nature and complexity of the project, the expertise of the architect, and where they are based, if they are in London you can expect to pay 10% – 15% more than elsewhere in the UK.

Feasibility Assessments

A feasibility assessment is vital to ascertain whether your site is suitable for what you are proposing and to determine whether you require planning permission or listed building consent.

It will analyse the risks, rewards, and opportunities that the site presents as well as flag up any constraints.

Building Regulations

Not to be confused with planning permission, building regulation approval determines whether your proposed structure is safe, energy-efficient, and accessible.

Whilst it covers the construction and extension of buildings you may require it for alterations such as a new bathroom or replacing windows and doors. Accurate and precise drawings are therefore particularly important.

Tender and Construction

Tender and construction documents are critical for the appointment of your chosen builder or contractor. The tender element will outline the type of contract along with the proposed schedule of works explaining the materials to be used, the method of construction, and installation. Along with pulling together the tender document, the architect will liaise with the builders in question to answer any questions they may have.

The construction drawings are a graphic representation of how the building is to be constructed and are used throughout the build right through to completion. They are part of a legal obligation between the client and the contractor. A complete set will comprise floor plans, elevations, sections, and detailed drawings.

Construction Inspection and Contract Administration

Once a building is underway it does not necessarily mean that an architect’s work is complete, they can have a role overseeing the build to ensure it is in line with the project requirements and specifications as set out in the contract. They may chair progress meetings, coordinate site inspections, issue practical completion certificates and interim certificates for payment, and agree upon testing procedures.

Project Management

Architects will often manage the delivery of a building project from start to finish. Their understanding of the whole project from the earliest stages ensures they can effectively oversee the specifications, schedule, and budget throughout and ensure they remain on track. This tends to be billed at an hourly rate.

*_{Queen’s Park House kitchen and dining, Queen’s Park, NW London}*

Examples of how much it costs to hire an architect

How much does an architect cost for an extension in the UK?

It may be surprising to hear that an extension can often cost more than a new build. It tends to be more resource intensive because you are adding to an existing structure which can throw up more complexities when it comes to planning, building regulations, and project management.

To hire an architect to draw up and submit plans as well as building regulation documents and in looking at fees as a percentage of overall costs, for a £250,000 project you could be looking at 14% so £35,000 in fees. This compares to a new build project which could be approx. 9.5% so £23,750. If you employ the architect for other stages such as project management then costs would increase.

Loft conversion architect fees

When it comes to a loft conversion and architects fees, what you pay will depend on the complexity of the project, whether you need planning permission, and the more involved and intricate the work.

For example, lower costs are associated with a rooflight conversion as that requires limited alterations structurally. Whereas adding one or more dormer windows or a full mansard loft conversion will see the scale of fees rise.

You can expect to pay £6,000 for planning for the latter kind of project and a further £7,000 to £10,000 to reach the tender stage and prepare for the build.

Architect costs for a UK renovation

Renovating your home brings with it many benefits from increasing its value to making it more energy efficient and comfortable.

There are of course different levels of renovation project, from a complete overhaul to perhaps installing a new bathroom or kitchen. Whichever route you go down it is important to check whether you need listed building consent before embarking.

If it is a significant project including structural and layout changes, then you can expect to pay approx. £10,000 in architectural fees as opposed to those projects which require less structural work but perhaps call for re-wiring or new plumbing, where the fee may be in the region of £7,500.

Architect fees for a UK new build home

This is often the simplest form of project and therefore may attract the lowest percentage of associated fees.

Generally looking at the fee as a percentage of the overall construction costs for example with a £350,000 build you would be looking at 9.5% so £33,250 in fees, compared to 8.5% so £42,500 for a £500,000 build.

Architect fees for new flats

As demonstrated with a new build the more costly the build the lower the percentage you can expect to pay proportionally when it comes to architect’s fees.

So for a £5 million project you may be looking at fees of £60,000 taking you up to planning permission through to at least £110,000 to get it to the build stage.

The hidden costs of architect’s fees

Hidden costs of traditional architect fees

When it comes to selecting an architect for your project you may be faced with choosing between a large firm or a smaller local practice. Both can present challenges when it comes to managing your budget.

Whilst a larger firm does have more staff to rely on this can mean that rather than the Director who is billing you carrying out the work, it is a lesser qualified colleague.

A smaller firm may present lower upfront costs, but these can be inflated over time should they need to outsource specialisms such as 3D modelling that they cannot do in-house.

Hidden costs of online architects

The initial attraction of an online architect is that as they tend to work remotely, they can offer you lower costs. However, these costs may increase over time as they add services on, i.e seeking planning permission or getting building control approval, this can leave you feeling stressed as the budget mounts up.

Hidden costs of unqualified architects

Becoming a qualified UK architect typically involves seven years of study, comprising five years at university, and two years practical experience. However, individuals who may not be fully qualified or registered as an architect can perform a variety of architectural services using the title architectural designer or draughtsman.

The concern with these titles is that they are fairly vague and broad. As a client, you may not fully understand what skills they have and which services they provide, and as there is no legal requirement to employ a qualified architect for an extension, renovation or construction project things could get tricky and costly if a project becomes complex and the individual in question does not have the appropriate expertise.

Another issue is that should a problem arise with an architect you have employed then if they are a RIBA chartered practice there is a comprehensive complaints procedure with serious professional consequences attached which gives you greater protection.

How to make sure you are hiring a real architect?

The title architect is protected by law in the UK and can only be used by someone on the Architect’s Register so that should be your first point of reference. Only genuine individuals with the correct training and experience will be included on this list.

The other due diligence to carry out is to choose a RIBA chartered practice as they will carry professional indemnity insurance, as well as follow a code of professional conduct, practice, and industry standards when it comes to ethics, equality, diversion, and pay.

How to agree fees?

Transparency and clarity are key when agreeing upon fees with your architect at the start of your project. It is important to understand what you are going to be charged at each stage, what the charges are for, the roles, and responsibilities, and what may not be included.

A proper fee schedule/proposal will list these items along with the number of meetings that may be required and includes all incidental costs such as VAT, planning and building regulations, and other statutory costs.

RIBA has a variety of templates such as the Professional Services Contract which is helpful when it comes to this.

How much do I need to invest to use the architect services of RISE Design Studio?

As we approach each project individually looking at its needs, and constraints to deliver the highest quality result, we need to know the specific scale and scope along with the type of appointment before discussing fees and confirming a budget.

It will depend upon variables including:

The type of building
The size of the building
Complexity of the project
Clarity of the brief
Required service level
Location of the project
Feasibility of the project

In essence however our fee structure is based on the standard scale as earlier discussed:

A fixed fee
A percentage of the project costs
Hourly rate

*_{Queen’s Gate Sky Home during construction, South Kensington, London}*

Some further examples of architects fees for various project types:

New Build House

Designing a new build house on an empty plot is usually the simplest type of private residential project for an architect, which means that they usually charge a lower percentage fee for this type of work. These figures are only approximate and should be taken as an indication since there may be many other factors to be taken into account (prices relevant to 2023)::

£150,000 budget: architect fee would be 10%
£250,000 budget: 9.5%
£500,000 budget: 9%
£1,000,000 budget: 8.5%

Even though VAT is usually not applicable to the construction expenses of a new home, it’s important to note that VAT still applies to the fees charged by architects and all other consultants involved in the project.

*_{Mill Hill House, Mill Hill North London}*

Extensions, Basements and Renovations

Working with existing buildings can be very complex, making these projects resource-intensive. There are usually no economies of scale or repetition involved, and it’s important to keep in mind that these types of projects usually involve some element of refurbishing the existing house as well. To achieve excellent design, architects may charge the following fees for extensions (prices relevant to 2023):

£150,000 budget: architect fee would be 15%
£250,000 budget: 14%
£500,000 budget: 13%
£1,000,000 budget: 12.5%

Listed Buildings

Working with listed buildings can be particularly challenging and complex, making these projects even more resource-intensive. Obtaining listed building consent and designing for the alteration or restoration of historic fabric requires an experienced architect with specialist knowledge. Architects may charge the following fees for works to listed buildings: (prices relevant to 2023):

£150,000 budget: architect fee would be 17%
£250,000 budget: 16%
£500,000 budget: 15%
£1,000,000 budget: 14.5%

*_{Queen’s Gate Sky Home living and dining, South Kensington}*

How much value can RISE Design Studio add to my project?

Poor design can have a significant long-term and expensive impact on a project. Here at RISE Design Studio, we believe that we offer our clients great value for money, peace of mind, and a considerable return on their investment.

Our comprehensive planning expertise means that you will have a higher chance of getting planning permission first time around – and of getting more through planning. For example, for developers, that may mean planning permission to build four houses rather than three– and you can see the profit implications of that.

In another example, with this extension, we added 67% to the value of the house. And with this high-end new build house in North London, we increased the price by 75% – and that’s with construction costs taken into account. This mansard roof extension of a listed building increased the value by £670,000 (using the previous value plus construction costs).

When you take these figures into consideration, you can see why you should regard the fees of a good architect as part of the overall project cost. In addition, with us, you get access to the most advanced architectural software allowing for improved productivity and visualisation along with reduced costs.

*_{On site at Screen 2 at The Lexi Cinema & Hub, Kensal Rise}*

How can RISE Design Studio help you?

We are a professional team of London-based award-winning contemporary architects who together have years of combined expertise, skill, and project experience.

A RIBA Chartered Practice we work to the RIBA Plan of Work and are continuously evolving our skills and creativity around new technologies and developments to provide the highest quality of design and buildings which are comfortable, beautiful, and energy-efficient.

We believe that in bringing this dedication and wealth of knowledge to each project and our clients we represent a worthwhile investment.

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

RISE Design Studio Architects company reg no: 08129708 VAT no: GB158316403 © RISE Design Studio. Trading since 2011.

West London Architects

Posted on April 3, 2023 by Sean Ronnie Hill

West London is an important historic area, that is recognised for its historical, cultural, and architectural significance. There are seven conservation areas in West London, including:

Bedford Park which is located in Chiswick, was the first garden suburb in the world, and features a mix of architectural styles, including Arts & Crafts and Victorian buildings.
Brook Green, situated between Hammersmith and Kensington, is a conservation area is known for its grand Victorian and Edwardian houses.
Chelsea, boasts a number of historic buildings, including the Chelsea Old Church and the Royal Hospital Chelsea.
Ealing, which features a mix of Georgian, Victorian, and Edwardian buildings, as well as several well-preserved public parks.
Holland Park, an affluent area characterised by green spaces and its grand Victorian and Edwardian houses.
Kew, famous for its botanical gardens, is also home to several important historical buildings, including Kew Palace and the National Archives.
Notting Hill, known for its colourful houses, Notting Hill is home to several conservation areas, which include the Pembridge Square and Ladbroke Square Gardens.

The above conservation areas are protected by local authorities and are subject to specific planning policy in order to preserve their unique character and architectural heritage.

RISE Design Studio has been working in the area since being established in 2011 and has helped homeowners transform their homes with creative bespoke designs that are sympathetic to beautiful period houses that the Victorian architects and builders constructed approximately one hundred and twenty years ago.

We are a RIBA chartered practice working in all areas of London as well as Ireland and more recently in Paris and Barcelona. Our services include full or partial architectural service with experience of working on listed buildings (both locally listed and English Heritage listed) as well as sites in London’s many conservation areas.

In Queens Park we have completed projects on many of the streets including Lancaster Road, Golbourne Road, Latimer Road, Balliol Road and Highlever Road.

We collaborate closely with our clients and end users, being deeply invested in ensuring the spaces we design have a positive impact on the people who will end up living in and experiencing the wonders of the new spaces. At the heart of our designs is collaboration and you will very much lead the journey, being consulted at every stage of the process. The end result will be a reflection of your aspirations and lifestyle, the uniqueness of the area and the existing building.

We offer a personal bespoke service, adhering to the programme and budget, and providing the highest attention to detail to deliver life-enhancing architecture and avoiding the common risks of construction.

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

RISE Design Studio Architects company reg no: 08129708 VAT no: GB158316403 © RISE Design Studio. Trading since 2011.

Kensal Green Architects

Posted on March 30, 2023 by Sean Ronnie Hill

Kensal Green was first recorded as ‘The King’s Wood’ on a broad green at the junction of Harrow Road and Kilburn Lane (later Wakeman Road).

Kensal Rise and Green is an important historic area, with a large number of well preserved Victorian housing and shops dating back to the 1890s.

The neighbourhood extends east and west from Chamberlayne Road, characterised by independent shops, pubs, restaurants and cafes as well as Ark Franklin Primary School. Gentrification of the area began in early 2010s and has brought a new wave of residents to the neighbourhood, drawn by its lower house prices compared to nearby areas such as West Hampstead, Ladbroke Grove, Notting Hill, St John’s Wood and Belsize Park.

RISE Design Studio has been working in the neighbourhood since being established in 2011 and has helped homeowners transform their homes with creative designs that are sympathetic to the beautiful period houses that the Victorian builders and architects built one hundred years ago.

We are a RIBA chartered practice working in all areas of London as well as Ireland and more recently in Barcelona and Paris. Our services include partial or full architectural service with experience of working on listed buildings (bothEnglish Heritage listed and locally listed) as well as sites in the many conservation areas of London.

In Kensal Green and Rise we have completed projects on many of the streets around the park including Purves Road, Burrows Road, Ashburnham Road, College Road, Leighton Gardens, Herbert Gardens, Leigh Gardens, Hardinge Road, Linden Avenue, Clifford Gardens, Bathurst Gardens and Chamberlayne Road!

At the core of our values lies sustainability. We firmly believe that creativity can tackle any practical challenges. Our approach emphasises the use of natural light to enhance physical spaces, promoting the well-being of those who inhabit the spaces. Our starting point is always to listen to your needs, understanding the unique requirements of each of our clients, and celebrating their individuality through meaningful conversations that directly inform the design.

We offer a personal bespoke service and with each project we undertake we go above and beyond to meet your expectations. Combining our knowledge, energy and talents to deliver fantastic client care and striving to make a positive difference to your lives.

If you are currently on the looking for an architect in Kensal Green, please give us a call with us to discuss your home extension project.

Our Burrows Road Glazed Envelope project in Kensal Rise

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

RISE Design Studio Architects company reg no: 08129708 VAT no: GB158316403 © RISE Design Studio. Trading since 2011.

Queen’s Park Architects

Posted on March 30, 2023 by Sean Ronnie Hill

The Queen’s Park neighbourhood and conservation area is an important historic area, with a high level of preserved Victorian housing dating back to the late 1800s. The area’s urban layout is distinguished by its cohesive design centered around the park, which is a good example of a Victorian urban green space. The streets surrounding the park largely comprise of original two and three storey Victorian houses. Gentrification of the neighbourhood began gradually at the turn of the millennium, but in recent years it has accelerated, notably in the 2010s. Pre pandemic has brought a new wave of residents to the neighbourhood, drawn by its lower house prices compared to nearby areas such as Notting Hill, Ladbroke Grove, Belsize Park, St John’s Wood and Hampstead.

In Queens Park we have completed projects on many of the streets around the park including Keslake Road, Creighton Road, Hopefield Road, Chevening Road, Harvist Road, Summerfield Avenue, Victoria Road, Dudley Road and Kempe Road!

If you are currently on the look out for Queen’s Park architect, please give us a call with us to discuss your home extension project.

The kitchen and dining area of our Queen’s Park House project

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

RISE Design Studio Architects company reg no: 08129708 VAT no: GB158316403 © RISE Design Studio. Trading since 2011.

Do I Need an Architect?

Posted on February 23, 2023 by Sean Ronnie Hill

Do I need an architect?

Investing in a building project is not a decision to be taken lightly. It involves a substantial commitment of finances and personal aspirations. When embarking on such a venture, it becomes very important to ensure that every aspect is meticulously handled with expertise and precision. While it may be tempting to solely rely on the skills of a builder and opt for a straightforward approach, it is essential to recognise that the true potential of a project can only be unlocked with the involvement of an architect. In this blog post, I aim to shed light on the pitfalls of not involving an architect and emphasise the considerable value that an architect can provide.

Site Meeting during Construction at The Lexi Cinema, Kensal Rise, North West London

What is the Role of an Architect?

Architects are not mere draftsmen; they are professionals who dedicate years to honing their craft. Through a combination of rigorous training and practical experience, architects acquire a unique skill set that encompasses both creativity and technical acumen. At RISE Design Studio, we approach every project as an opportunity to solve problems and create tangible buildings that surpass client expectations.

What about Insurance and Accountability?

One of the fundamental reasons to hire an architect is the assurance it brings. In the United Kingdom, all architects must be registered with the Architects Registration Board (ARB) and carry adequate professional insurance. This not only ensures that architects adhere to stringent industry standards but also provides clients with recourse in the event of any unforeseen issues. At RISE Design Studio, we take our commitment to excellence a step further by being an RIBA Chartered practice, fully aligned with the Royal Institute of British Architects’ Code of Practice. This level of accountability further underscores the importance of involving an architect in your project.

The Creative Vision: Transforming Ideas into Reality:

Architects possess a unique ability to transform abstract ideas and aspirations into tangible structures. By employing a holistic approach that considers aesthetics, functionality, and sustainability, architects are capable of breathing life into your vision. At our design-led architecture studio, we have an unwavering focus on low energy and low embodied carbon designs. This means that not only will your project be aesthetically appealing, but it will also be environmentally conscious and energy-efficient.

How do I Mitigate Pitfalls and Maximise Potential?

The decision to forego an architect can lead to several pitfalls that may impact the success of your project. Without an architect’s guidance, it becomes challenging to navigate complex building regulations and obtain necessary permits. This can result in costly delays, fines, or even legal complications. Additionally, the lack of a comprehensive design strategy can lead to inefficient use of space, inadequate lighting, poor ventilation, and subpar energy performance. These issues not only diminish the comfort and functionality of the building but also have long-term implications on operational costs and environmental impact and resale value.

Collaboration and the Architect-Client Relationship:

Working with an architect fosters a collaborative relationship between the client and the design professional. Architects invest time in understanding your unique requirements, aspirations, and constraints. By forging a strong partnership, architects can translate your desires into practical design solutions. This close collaboration ensures that the final outcome aligns seamlessly with your vision while incorporating innovative design elements that you may not have considered otherwise. Furthermore, architects possess the skills to communicate complex design concepts effectively, allowing you to visualise and actively participate in the evolution of your project.

Sustainability and a Future-Forward Approach:

In an era where environmental consciousness and sustainability are of utmost importance, architects play a pivotal role in creating buildings with low embodied carbon and energy-efficient designs. At RISE Design Studio, we are committed to reducing the environmental impact of our projects through careful material selection, passive design strategies, and the integration of renewable energy systems. By working closely with an architect who prioritises sustainability, you can contribute to a greener future and enjoy the long-term benefits of reduced energy consumption and operational costs and increased value of your home, office, school, restaurant or cinema.

Light House, North Clapham - Sustainability Strategy — ^{Light House, North Clapham – Sustainability Strategy}

Conclusion:

Investing in an architect is an investment in the success, efficiency, and longevity of your building project. Architects bring a wealth of knowledge, creativity, and technical expertise to the table, ensuring that your vision is transformed into a reality that surpasses your expectations. By prioritising low energy and low embodied carbon designs, architects can create buildings that not only fulfil your desires but also contribute positively to the environment. So, whether you’re embarking on a residential, commercial, or public project, remember the invaluable role an architect plays in bringing your dreams to life while ensuring a sustainable future for generations to come.

The Complete Guide to Modern, Eco-friendly Kitchen Extensions

Posted on February 14, 2023 by Sean Ronnie Hill

This guide will take you through the complete process of planning and implementing a kitchen extension project, with the added advantage of making your home more sustainable.

Section 1: The Need for Kitchen Extensions in Modern Lifestyles

Our fast-paced modern lifestyles necessitate homes that mirror this dynamism and provide spaces that are comfortable, efficient, and well-integrated. Traditional housing often doesn’t offer these attributes – specifically in the kitchen area – leading many homeowners to consider the prospect of kitchen extensions. Given the kitchen’s central role in a home, improving it can enhance your entire living space’s overall appeal and functionality.

A rear return kitchen extension in Kensal Rise by RISE Design Studio — ^{A rear kitchen extension in Kensal Rise by RISE Design Studio}

Section 2: Common Kitchen Extension Options

There are several ways to expand a kitchen based on the existing layout and structure of your home. Some popular methods include creating an open-plan kitchen by removing internal walls, extending into the side return, extending to the rear, or creating a double-height space.

For homes with Victorian or Georgian architecture featuring a lower ground and raised ground floor layout, consider the practicality and accessibility of your kitchen. For instance, you might choose to locate the kitchen on the raised ground floor for better street access at the front or on the lower ground floor for easy access to the garden at the rear.

^{A side and rear return contemporary kitchen extension in Kensal Green by RISE Design Studio}

Section 3: The Financial Implications of Kitchen Extensions

Kitchen extensions, particularly in London and the South East, typically cost between £2,200-3,100 per square metre, but prices can fluctuate depending on the complexity and quality of the kitchen fit-out. You can expect a simple kitchen fit-out, including appliances and services, to start at around £17,000, with premium options costing upwards of £65,000.

Section 4: Outline Design Considerations for Your Kitchen Extension

Before embarking on your kitchen extension, it’s essential to plan. Think about what works well in your current kitchen and what doesn’t, and consider how you and your family move within this space.

Will a single bank of units be sufficient, or would a galley kitchen be more practical? How many people typically use the kitchen at once? Would a peninsula or island work well in your new space? These are all important factors to ponder when conceptualising your new kitchen design.

A contemporary kitchen in a new build house in Mill Hill by RISE Design Studio — ^{A contemporary kitchen for a new build house in Mill Hill by RISE Design Studio}

Section 5: Detailed Design Considerations

On top of the primary outline design considerations, there are finer details to take into account as well. These involve storage solutions, appliance placement, and the overall aesthetics of your new kitchen.

You might consider electrical sockets in a cupboard to hide appliances or integrating storage devices to make awkward corner cupboards easier to use. Perhaps you require built-in wine storage or charging points for electronics. Tailoring these details to your specific needs and preferences can greatly enhance the functionality and enjoyment of your new kitchen.

^{A rear lower ground floor kitchen extension in Stockwell by RISE Design Studio}

Section 6: Choosing the Right Installer for Your Kitchen Extension

There are numerous options when it comes to installing your kitchen extension. From off-the-shelf options like B&Q, Wickes, Howdens, IKEA, and online companies such as diy-kitchens.com to specialist kitchen companies like deVol and Bulthaup, there’s a choice for every budget and requirement.

If you’re seeking a truly unique kitchen design, a bespoke solution from a skilled joiner might be the best route. They can work to your exact requirements, ensuring your new kitchen fits seamlessly with the rest of your home.

^{A double-height rear kitchen extension in Willesden by RISE Design Studio}

Section 7: Deciding on Appliances

Appliances play a crucial role in the functionality and efficiency of your kitchen. Whether you’re reusing existing appliances or purchasing new ones, it’s vital to choose options that align with your lifestyle, space, and energy consumption goals.

From ovens to hobs, fridges to freezers, and even boiling water taps or drawer-type dishwashers, appliances come in all shapes and sizes. Always consider the energy rating of your chosen appliances as this can significantly affect your running costs and overall home’s energy efficiency.

Section 8: Worktops, Splashbacks and Cupboard Finishes

When it comes to worktops, splashbacks and cupboard finishes, you’re spoiled for choice. There are various materials available in a wide range of colours, textures, and prices. From laminates to solid woods, composite materials, and even concrete or terrazzo, the right choice will hinge on your aesthetic preferences, practical needs, and budget.

Cupboard finishes also offer a wide array of options, including laminated plywood, veneered plywood, or a sprayed lacquered finish. The colours, materials, and even the handles you choose for your cupboards can dramatically impact the overall look and feel of your new kitchen.

A rear and side ground floor kitchen extension in Queen's Park by RISE Design Studio — ^{A rear and side ground floor kitchen extension in Queen’s Park by RISE Design Studio}

Section 9: Floor Finishes and Other Considerations

The floor finish is an important aspect of any kitchen design. It should be durable, resistant to stains, and ideally extend throughout the kitchen, dining, and living areas for a unified look. Options range from timber and tiles to stone to polished concrete and natural linoleum.

Additional elements to consider include lighting, ventilation, heating, and furniture. You might wish to include dimmable mood lighting, ensure adequate ventilation, opt for underfloor heating, and select furniture that complements your new kitchen.

Section 10: Final Thoughts

Kitchen extensions are an invaluable way to improve your home, not only for your enjoyment but also for its potential resale value in the future. As an experienced architect from a design-led architecture studio focused on low energy and low embodied carbon designs, we believe such projects can significantly contribute to creating sustainable, energy-efficient homes.

Remember, careful planning, diligent execution, and a clear vision can transform your kitchen into a space that is both beautiful and practical, making it the heart of your home.

Frequently Asked Questions

Q1: Why are kitchen extensions significant in modern living?

A: Given the fast-paced nature of modern lifestyles, homes need to provide spaces that are comfortable, efficient, and well-integrated. Traditional housing often lacks these attributes in the kitchen area, leading many homeowners to consider kitchen extensions to enhance the overall appeal and functionality of their homes.

Q2: What are some common kitchen extension options?

A: Kitchen extensions can be achieved by creating an open-plan kitchen through the removal of internal walls, extending into the side return, extending to the rear, or creating a double-height space. The optimal method depends on the existing layout and structure of your home.

Q3: How much does a kitchen extension typically cost?

A: In London and the South East, kitchen extensions typically cost between £2,200-3,100 per square meter. The overall cost can vary based on the complexity and quality of the kitchen fit-out. A simple kitchen fit-out, including appliances and services, can start at around £17,000, with premium options costing upwards of £65,000.

Q4: What factors should be considered when planning a kitchen extension?

A: It’s important to consider the functionality of your current kitchen and how the space is utilised. Questions such as how many people typically use the kitchen at once and whether a single bank of units or a galley kitchen would be more practical should be considered. Other elements like the potential for a peninsula or island should also be contemplated.

Q5: What detailed design considerations are involved in a kitchen extension?

A: Beyond basic design, detailed considerations include storage solutions, appliance placement, and the overall aesthetics of your new kitchen. Tailoring these details to your specific needs and preferences can significantly enhance the functionality and enjoyment of your new kitchen.

Q6: How do I choose the right installer for my kitchen extension?

A: Numerous options exist for kitchen extension installation, from off-the-shelf options like B&Q, Wickes, Howdens, IKEA, John Lewis, Magnet, Charlie Kingham and online companies such as diy-kitchens.com, to specialist kitchen companies like Artichoke, deVOL, Boffi, Lundhs, Plain English, Harvey Jones, Humphrey Munson, Poggenpohl, Roundhouse, Siematic, Smallbone of Devizes, Woodstock Kitchens and Bulthaup. If you’re seeking a unique design, a bespoke solution from a skilled joiner might be the best route.

Q7: How important are appliances in a kitchen extension?

A: Appliances play a crucial role in the functionality and efficiency of your kitchen. It’s vital to choose options that align with your lifestyle, space, and energy consumption goals. The energy rating of your chosen appliances can significantly affect your running costs and overall home’s energy efficiency.

Q8: What options are available for worktops, splashbacks and cupboard finishes?

A: There’s a vast array of options for worktops, splashbacks, and cupboard finishes, with a variety of materials available in a wide range of colours, textures, and prices. From laminates to solid woods, composite materials, and even concrete or terrazzo, the right choice will depend on your aesthetic preferences, practical needs, and budget.

Q9: What considerations should be taken into account for floor finishes?

A: The floor finish should be durable, resistant to stains, and ideally extend throughout the kitchen, dining, and living areas for a unified look. Options range from timber and tiles to stone and natural linoleum to polished concrete. Additional elements to consider include lighting, ventilation, heating, and furniture.

Q10: How can a kitchen extension improve my home?

A: Kitchen extensions can significantly improve your home, enhancing your enjoyment and potential resale value. With careful planning, diligent execution, and a clear vision, a kitchen extension can transform your kitchen into a beautiful, practical space that forms the heart of your home.

If you would like to talk through your kitchen project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

RISE Design Studio Architects company reg no: 08129708 VAT no: GB158316403 © RISE Design Studio. Trading since 2011.

How do I chose an Architect?

Posted on January 23, 2023 by Sean Ronnie Hill

Selecting an architect is a critical decision that can greatly impact the success and satisfaction of your architectural project. It goes beyond examining an architect’s track record and past projects, although those aspects certainly hold value.

Shared Aspirations and Values:

Finding an architect who shares your aspirations and values is paramount. While reviewing an architect’s portfolio is essential to assess their capabilities, it is equally important to delve deeper into their mission and philosophy. At RISE Design Studio, our approach centres around creating sustainable designs that not only enhance the built environment but also align with our clients’ values. By prioritising low energy and low embodied carbon designs, we aim to minimise the environmental impact of our projects. Ensure that the architect you choose resonates with your vision for a sustainable and socially responsible architectural project.

^{Light House, North Clapham, London}

Initiating the Conversation:

Once you have identified potential architects who align with your aspirations, it is time to initiate a conversation. This initial interaction is pivotal in assessing the architect’s suitability for your project. Consider whether you genuinely want to work with them. Do they actively listen to your ideas and concerns? Are they invested in understanding your unique requirements? A good architect will ask thoughtful questions, provide reassurance, and demonstrate their ability to comprehend and address your worries. It is crucial that they explain their work process clearly, avoiding unnecessary jargon and ensuring you have a comprehensive understanding of what to expect. If you anticipate working with other members of their team, it is worth exploring the possibility of connecting with them as well.

Building a Strong Rapport:

Given the collaborative nature of architectural projects, building a strong rapport with your architect is essential. Throughout the process, you will be working closely together, sharing ideas, and making decisions that shape the final outcome. Consequently, it is important to enjoy the company of your architect and promote a good working relationship. Trust and open communication are the cornerstones of a successful collaboration. Listen to your instincts and assess whether you feel comfortable, understood, and inspired by the architect’s approach. Ultimately, your heart, rather than your head, will guide you towards the architect who feels like the perfect fit.

^{The Lexi Cinema & Hub, Kensal Rise, London}

Client Testimonials – A Glimpse into Architectural Excellence:

Client testimonials provide valuable insights into an architect’s capabilities, professionalism, and dedication to client satisfaction. Reading testimonials from previous clients can offer a glimpse into their experiences and help you gauge the architect’s ability to deliver exceptional results. At RISE Design Studio, we take pride in the positive feedback we have received from our clients, as it reflects our commitment to excellence and client-centric approach. Testimonials serve as a testament to the collaborative and inspiring journey we embark upon with our clients. Prior to be engaged we will connect you with previous Clients for you to have a candid discussion on how it was for them to work with us at RISE Design Studio.

^{Carousel restaurant, Fitzrovia, London}

Conclusion:

Choosing the perfect architect is a critical step towards turning your architectural vision into a tangible reality. While an architect’s track record and past projects are important factors to consider, finding an architect who shares your aspirations, values, and commitment to sustainability is paramount. Initiate conversations with potential architects, paying attention to their ability to listen, ask insightful questions, and provide reassurance. Build a strong rapport with your architect, ensuring compatibility, trust, and effective communication. Finally it’s important to take into account the reviews of previous clients to gain a deeper understanding of an architect’s capabilities and client satisfaction. By carefully selecting an architect who aligns with your vision and values, you will set the stage for a transformative architectural journey that will exceed your expectations.

RIBA Plan of Work 2020: A Comprehensive Guide

Posted on January 23, 2023 by Sean Ronnie Hill

Architects like most professions welcome industry led guidelines and approaches to inform and improve their work both for their clients, collaborators, and their own progression.

The RIBA Plan of Work 2020 is a guidance document set out by the Royal Institute of British Architects (RIBA) and is seen as the definitive design and process management tool for the UK construction industry.

First established in 1963 to provide a framework for architects to use on client projects to bring greater clarity to each stage of the process, it has evolved over the years to become an industry wide tool.

To reflect the changing approaches to building design, construction and use, and the associated advances in digital technology, increased ethics awareness, and the prioritisation of sustainable outcomes in line with the RIBA 2030 Climate Challenge, it received its biggest overhaul in 2020.

In this article we examine the eight stages of the RIBA Plan of Work 2020. We look at how this formal roadmap, whilst not a contractual document provides vital guidance and helps to deliver successful outcomes for stakeholders by informing the briefing, design, construction, handover, and use of a building.

Each of the eight key stages has an expected outcome; core tasks; core statutory processes in relation to planning and building processes; and crucial information exchanges, all of which impact the success of the next stage.

RIBA Plan of Work 2020 template — **RIBA Plan of Work 2020**

Stage Zero – Strategic Definition

‘What do you want to achieve from your building project, and what are your best options?’

This stage is not about design or practical details, but rather a chance for us to get to know the client, developing their requirements and helping shape the business case to achieve them.

At this stage all those involved in the client team, alongside ourselves and any other professional advisors must consider that the proposed building project is the appropriate means to meet the client’s stated objectives, and then determine the best way forward.

For example, perhaps a new building is not the answer, and the solution could be refurbishment or an extension.

To come to a decision, information is gathered for each option. This involves examining previous similar projects, the current building if applicable, analysis of project risk (where appropriate site appraisals and surveys carried out), and consideration of project budgets.

We will look at the size, location, scope, and special considerations around the clients’ needs to further refine the vision.

From this exercise a recommendation is made on the best option, and a business case is completed.

Mill Hill House - Concept Design Sketches — Mill Hill House – Concept Design Sketches

Stage One – Preparation and Briefing

‘Developing the initial project brief and setting out the timescales – the official start of the project’

Once it has been determined that the chosen project and site is the best way forward, stage one, is the process of preparing a comprehensive project brief and choosing the collaborative project team, allocating specific roles and responsibilities.

The project team will include:

– Design team – headed up by Lead Designer and overseeing the design programme
– Client team – headed up by Project Manager and overseeing the project programme
– Construction team – headed up by Project Director and overseeing the construction programme

Feasibility studies and site surveys may be required at this stage to test the brief against the chosen site and budget i.e. are there any access issues? Is it a sloping site? What is the spatial overview and relationships with neighbouring buildings?

This is often the time for us to discuss options regarding the site with the local planning authority and make sure there are no constraints. We like to establish clear and positive communication with these departments from the outset.

Discussions around building regulations and other legal requirements should happen at this stage including whether the site is within a listed buildings or conservation area

It is at this point that objectives are finalised and recorded under:

– Project Outcomes
– Sustainability Outcomes
– Quality Aspirations
– Spatial Requirements

Working with the client, we will at the end of this stage, produce a timescale for the project as well as a project execution plan setting out delivery.

Briefing for Buildings: A practical guide for clients and their design teams

Stage Two – Concept Design

‘The design stages begin and the architectural concept is defined ‘

Stage two begins the core design process which culminates at stage four.

We work closely at this stage with the client to produce visualisations, 3D models, and drawings of the architectural concept, ensuring it meets their needs and is aligned to the project brief and cost plan.

As well as a visual representation of the building with sections and elevations and how it sits within the surrounding environment, these will often include:

– Interior and exterior renders
– Landscaping
– Specific requests
– Strategic engineering requirements

There is as the RIBA states ‘no right or wrong approach’ at this point, it is our initial design response to the brief and will involve regular meetings, discussions and reviews with the client and specialist stakeholders including planners and those across structural and civil engineering, to shape and define it.

The robust architectural concept along with the project brief and cost plan are signed off at the end of this stage.

^{Herbert Paradise, Kensal Rise, North West London}

Stage Three – Spatial Co-ordination

‘The co-ordinated design takes form.’

Formerly the developed design stage, here our team draw up the client approved design in CAD or ever increasingly with BIM, and develop and test it alongside detailed structural design, outline specifications, building services and cost analysis to ensure its viability.

Our design will incorporate the practical elements relating to:

– Window, door, stairway, and fire exit locations
– Fixtures, fittings
– Proposed materials
– Load bearing mechanical information
– Mechanical, plumbing, and electrical considerations
– Tech and security
– Green, eco and solar

During this stage, or certainly at the end the design is finalised into a single model, not prone to change, and planning applications are ready for submission incorporating all our detailed drawings and reports.

^{Arches House – Technical Design Package for Tender Issue}

Stage Four – Technical Design

‘Final design stage before construction begins’

We make further refinements of the existing design at this stage, incorporating where relevant detail from specialist sub-contractors such as lighting specialists, kitchen designers or glazing companies.

From this our Lead Architect prepares comprehensive drawings, specifications, and documents for tender.

The level of detail will depend on the size and scope of the project but by the end of this stage all elements will be prescriptive rather than descriptive for the project to be manufactured and built, i.e., they set out detailed descriptions around the following:

– Requirements relating to regulations and standards
– The specific types of products and materials required
– The methods of delivery and installation
– The building systems in place i.e., flooring, partitions, mechanical and structural

At the end of this stage all information required to construct the project is completed and we send out the tender to 3-4 contractors we have worked with before. Of course, should the client want to add to the list we will do so.

Herbert Paradise during Construction, Kensal Rise, North West London

Stage Five – Manufacturing and Construction

‘All systems go…construction begins’

The design process is now complete and the appointed contractor takes possession of the site to carry out works as per the schedule of works and building contract. This includes manufacturing off-site and construction on-site.

Stage four and stage five can overlap or run concurrently dependent on the size and scope of the project, or when the contractor was appointed.

The client can choose to appoint us as the contract administrator at this point should they wish. In this role we act as the middle ground between the client and the contractor to ensure that all works are being done in accordance with finalised drawings and specifications. This can entail:

– Chairing construction progress meetings
– Preparing and issuing construction progress reports
– Co-ordinating site inspections
– Dealing with site queries
– Agree reporting procedures for defects
– Issuing project documentation to the client
– Issuing certificates of completion

If appointed, we like to meet weekly with the client and the relevant parties to ensure that everything is running smoothly.

The appointment of Building control by the client should take place, to oversee the project and ensure that all is in order in relation to the necessary construction standards.

Health and Safety inspectors will review and observe the site at this stage, so it is worth considering an independent consultant to ensure that all the correct procedures are followed.

Burrows Road Glazed Envelope, Kensal Rise, North West London

Stage Six – Handover

‘The completed building is finished and handed over’

After practical completion, the building is ready for hand over to the client, and the building contract concludes.

Feedback and building aftercare exercises take place during this stage to act as future learnings for ourselves, the client, contractor, and consultants, and to address any issues relating to the integrity of the building.

These involve light touch post occupancy evaluation and snagging processes, whereby the client compiles a list of defects or incomplete works, overseen by us as the contracts administrator and presented to the contractor to rectify.

They then have an agreed Defect Liability Period, usually six to twelve months to address these, after which if all has been made good, building control will sign off the construction and we will sign off the project as a whole.

We then issue a final certificate, and this stage is complete.

^{Light House, North Clapham, London}

Stage Seven – Use

‘The vision for the building is realised and it is now in use’

This stage starts concurrently with stage six.

The building is now occupied and in use. On most projects, our design team will have no duties to fulfil here.

However, the incorporation of this stage into the RIBA Plan of Work 2020 gives the client the opportunity to get in touch with us if they require general advice relating to maintenance, energy consumption or management of the facilities.

We welcome this communication as we love to hear how the client is finding their new building, and it also allows for effective aftercare, valuable feedback, and building monitoring especially around energy consumption, and is therefore key to the sustainability strategy.

The addition of this feedback stage has made the Plan of Work cyclical as it unites the entire process into one, allowing for proper use of the building and then when demands change, and the building reaches an end of life where refurbishment or a new building may be needed, stage zero starts again.

Embarking on a design and build project can often be a complex one for all involved, for a client it can be daunting.

The RIBA Plan of Work 2020 offers all stakeholders a clear approach to map out the journey collaboratively from vision, through to design, construction and eventual use.

At RISE Design Studios, we find that this straightforward process with realistic and measurable targets, the ability to review progress and a provision for valuable learnings allows for enhanced clarity, greater realisation of vision, and successful outcomes no matter the diversity of projects.

For more information on the RIBA Plan of Work 2020 visit RIBA Plan of Work (architecture.com)

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

Discover How To Achieve Your Eco Home

Posted on November 29, 2022 by Sean Ronnie Hill

“CO emissions from buildings and construction hits new high” announced the headline from 2022’s Global Status Report for Buildings and Construction. Released at COP27, it paints a gloomy picture of the sectors huge rate of energy consumption and emissions.

Accounting for over 34% of energy demand and approx. 37% of energy and process related CO2 emissions in 2021, the sector is further widening the gap between it and the decarbonisation targets of 2050.

However, amongst this negativity there continues to be pioneering work in eco-friendly architecture and smart low energy homes. Once seen as a quirk of the rich or eccentric, these sustainable, affordable, and forward-thinking properties are springing up throughout the country.

As energy bills continue to rise, and the need to reduce carbon emissions becomes even more critical we look at the growth in popularity of these green friendly and environmentally conscious buildings.

The UK legacy of poor building design

As outlined in a recent Guardian article by Phineas Harper, we have in the UK some of the smallest, oldest, and poorest insulated houses in Europe with more than half built before 1965.

This ageing and inefficient housing stock is the result of mass building predominantly in the industrial revolution which saw small, largely terraced two-up-two down, street facing homes, constructed in narrow streets with poor shading and orientation.

With cooler summers and cheap coal used in open fires, environmental performance and extreme weather were certainly not a consideration!

Deregulation has also led to micro homes springing up, created without planning permission from office blocks and commercial buildings with cramp living spaces prone to overheating with no cross ventilation.

Either too hot in the summer or freezing in the winter, these poorly insulated houses now present a major challenge in the fight against climate change, accounting for 66 million tonnes of emissions in 2019 due to burning coal, gas and oil for space heating and hot water.

As the Building Research Establishment (BRE) states: “The UK has the oldest housing stock in Europe, and most likely in the world. This is largely due to the legacy of dwellings built during the industrial revolution, which still form the backbone of our urban areas today.”

“While still widely valued, these homes present challenges in making them healthy, safe and suitable for the future.”

Whilst new build homes can go some way to offering a solution, the homes which make up most of the country’s stock require retrofit to make them not only habitable, comfortable, and visually appealing for the future, but also to achieve energy efficiency and climate targets.

A zero carbon or low carbon home

When it comes to sustainable architecture and eco homes, there are two main routes to consider, these are zero carbon and low carbon.

Both focus on energy conservation and efficiency through elevated levels of insulation, high performance triple glazed windows, airtight building materials, thermal bridge free construction and mechanical ventilation systems.

The main difference is that in the design of a zero-carbon home the aim is to produce no carbon dioxide through its energy use whereas a low carbon home reduces its emissions to a much more acceptable degree compared to the average property.

Herbert Paradise, Kensal Rise, North West London - Low Energy Home — Herbert Paradise, Kensal Rise, North West London – Low Energy Home

What are the design elements of eco homes?

The unveiling of the UK’s first net zero home took place recently in Camden Town.

The UK Green Building Councils Framework awarded the Max Fordham House this accolade in recognition of its emissions as well as its use of natural materials including low carbon cement, timber for the roof, window frames and façade, and wood fibre and cork flooring for internal insulation.

The all-electric home also features a roof-mounted PV to meet 25% of its energy needs with the remaining supplied by a 100% renewable energy tariff.

Much of what it achieved was through the Passivhaus standard of design and construction (or EnerPHit for retrofit). Here the focus is on superb thermal performance, stringent levels of airtightness, minimal thermal bridging, optimisation of passive solar gain, and mechanical ventilation with heat recovery, resulting in homes with a comfortable temperature and minimal energy use, 75% less than a standard home. Heat is generated via sunlight, inhabitants, A+++appliances and LED lighting.

Whilst you may not wish to fully adopt the exacting standards of Passivhaus (or EnerPHit), particularly dependent on your regional climate, home orientation/shape, and whether it’s an existing or listed property, at RISE we will work with you to incorporate a variety of design principles into your new build, refurbishment, or retrofit to create a sustainable home.

Creating an efficient thermal envelope

Insulation is fundamental to any eco home as it has a major impact on heat gain as well as heat loss, and therefore on energy consumption.

Passivhaus design ensures that through insulation levels any heat lost during winter is negligible and that indoor air and surface temperatures are almost similar, ensuring a comfortable climate.

Exterior walls, basements and attics across all homes can benefit from this approach and use less energy, with high performing, non-toxic and renewable insulation such as sheep’s wool, wood fibre, and hemp used to trap heat and create a thermal envelope.

Energy efficient glazing

It is unsurprising that one of the biggest culprits of heat loss from the home is glass with a typical home losing 10%. Whilst Passivhaus requires optimised glazing on the south façade of a property with reduced glazing on the north, if you are looking at a retrofit you can make improvements.

The energy efficiency of a window is measured with its U-value, the lower the number the better. Whilst double glazed windows are normally 1.6, triple glazed can sit at an impressive 0.8 with an energy rating of A++, the highest possible rating and recognised by the Passivhaus Institute as the acceptable standard.

With three sheets of glass, and two gaps, triple glazing your windows where possible, can improve insulation, reduce energy bills, and carbon emissions.

Although costly at the outset they will bring with them multiple benefits for your home especially when fitted to the south-facing side.

Additionally, look at passive design techniques to help create external shade and reduce heat transfer from these windows in summer, such as awnings and overhangs as well as trees and landscaping. This will not affect the heat gain from the low sun in winter.

Renewable Energy Features

Solar energy, heat pumps and biomass boilers are all examples of renewable energy that you can incorporate into the home.

Each allows you to generate your own energy without reliance on traditional sources such as polluting fossil fuels. This then helps to create a carbon positive home in which a building produces more energy than it needs, sending surplus back to the grid.

Greener Construction

This may apply more to a new build project but is also a consideration where applicable for elements of an energy efficient retrofit. Greener construction includes a number of variables and is not just based upon using recyclable materials.

It is part of what makes a carbon positive home, one which uses sustainable building materials to reduce emissions related to production, transportation, and installation.

Consider where the product was made, how it was made, and how far it had to travel to reach site. If we look at the BedZED village, the UK’s first mixed use sustainable community completed in 2002 they were able to use 52% of their materials from within 35miles.

In addition, look at whether you can use reclaimed materials. The same project used, 3,400 tonnes of reclaimed and recycled material representing 15% of the total. For a domestic project this could comprise any manner of things from doors, tiles, and bricks to bathtubs and light fixtures.

Finally, see where you can make changes by selecting eco-friendly and sustainable alternatives, such as those we touched upon relating to insulation as well as bamboo, cork, straw and hempcrete.

Airtightness

For a truly eco-friendly and low carbon home airtightness is a major consideration. This represents the fabric first approach to buildings that are less reliant on space heating.

It focuses on the leakage of air from a house, escaping through gaps and cracks in the fabric of the property. In terms of Building Regulations this means that no more than 10 cubic metres of air can escape per hour for every square metre of the envelope surface area.

To put this into perspective a house achieving 5 cubic metres will see their energy use reduce by up to 40%.

Whilst we talked about windows and insulation earlier, it is also important to look at door frames, open fires and chimneys, pipes, and cables.

The use of specific materials for membranes and barriers such as long-lasting flexible mastic is also key. If constructing a new home, then eco-friendly structurally insulated panels (SIPs) made from timber are a positive choice, manufactured off-site they can help to reduce carbon emissions.

Natural and Mechanical Ventilation

To maintain a healthy and comfortable internal environment in an airtight home, ventilation is a crucial factor.

Airtight properties will often rely on mechanical ventilation with heat recovery (MVHR) systems as well as skylights and natural cross ventilation with windows on each side of the home creating a cross breeze, although the latter is harder in winter and will exacerbate heat loss.

MVHR take moisture from rooms such as bathrooms and kitchens, passing it through heat exchangers which in turn combines it with fresh air coming into the home, releasing this pre-warmed air back into the property.

As it requires ducts to run through the building it must comply with building legislation in terms of installation, design, and inspection, and we can advise you on this.

How an architect will help you achieve your eco home

As you can see whether retrofit, refurbishment or new build there is much to consider when it comes to creating a liveable and comfortable eco home. Here at RISE, we have the experience and skill to help you to achieve your vision.

Our passion in this area has seen continual professional development undertaken across the team with a focus on the EnerPHit standard developed by the Passivhaus Institute. Still a very demanding standard it does relax part of the criteria, recognising the challenges of retrofit projects.

Client led, we look at not only the design and construction of the building, but its eventual end use to ensure that the sustainable house you create is also a home.

If you would like to talk through your project with the team, please do get in touch at mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

The Rise in Popularity of Green Roofs

Posted on October 3, 2022 by Sean Ronnie Hill

Living roofs or green roofs, were until recent years a rarity in the UK building landscape, seen as a luxurious design addition implemented by the few with adoption much greater in countries such as Switzerland and Germany.

Today, alongside other forms of sustainable architecture and design, or green technology, they are growing in popularity.

Seen as not only aesthetically pleasing in densely populated urban areas, but increasingly as a method to reduce energy use and carbon emissions, they are key along with green walls, roof terraces, and solar to improving our resilience to climate change and safeguarding our environmental future.

Green roof provision has grown considerably across the capital as shown in the 2019 London Green Roof Report this has been in part to key policy drivers like the 2008 amends to the London Plan, stating in planning policy 5.1 ‘the Mayor will, and boroughs, should expect major developments to incorporate living roofs and walls, where feasible’ .

With this in mind, we examine green roofs, the distinct types, the benefits they bring, architectural and design considerations, and the future outlook.

What are green roofs?

Installed on flat or low-pitched roofs with an angle of no more than 30degrees, green roofs also referred to as living or eco roofs are found on small residential buildings through to large commercial and industrial buildings.

They consist of engineered soil (substrate) especially designed to hold the correct amounts of moisture, nutrients, and air for successful plant growth. They are either intensively or extensively planted with vegetation, then laid over a waterproof membrane or moisture retention fleece to prevent leakage and remain watertight in all conditions.

As well as these elements, a typical green roof layer/system will consist of a root barrier, thermal insulation, and drainage/irrigation systems.

They offer minimum or maximum levels of pedestrian access and use dependent on space and roof structure, and with grasses, herbs, mosses, and wildflowers can improve biodiversity by providing a habitat for birds, and insects.

In addition, they have an array of environmental benefits which we will discuss further on.

What are the different types of green roof?

There are three main types of green roof, intensive, extensive, and semi-intensive. Each differ and are unique in terms of use, maintenance, design implications, weight, and cost.

Intensive green roof

You will typically see an intensive green roof or roof garden designed for accessible recreational use on large commercial buildings such as those at Jubilee Park in Canary Wharf, 55 Broadway, or at New Providence Wharf in Docklands which covers an area of 8.3 hectares. Prince of Wales Drive is a good example of an intensive green roof in a residential setting.

Due to the scale of an intensive green roof and with its tendency to feature extensive lawns, trees, paved areas and even water features they can weigh a significant amount and usually need to be designed with a heavy-supporting structure typically with reinforced concrete to take a load of up to 200kg/m2.

The soil on an intensive green roof is planted quite deeply at over 200mm and once planted are labour intensive requiring regular maintenance, fertilisation, weeding, and pruning.

Due to their need for regular watering, they will have dedicated rooftop irrigation such as a dripline system laid below the soil surface at root level.

Considering all these factors, they are the costliest green roof.

Extensive green roof

Compared to intensive green roofs, extensive systems are lighter in weight (40-110kg/m2) and are shallower ranging from 2cm to 12cm in depth, because of this they require less maintenance normally just once a year weeding, are less costly, and can be self-sustaining.

Their shallow depth means that extensive green roofs in London and the UK tend to comprise of hardier sedum or stonecrops. Sedums are low growing succulents (which store water) which look to be sitting on the soil, with the word coming from the Latin ‘sedeo’ which means to sit.

It is because of their shallowness that they do not add great weight to a roof, they also tend to be drought and frost proof which means they require little watering.

Easier to implement, a popular choice is to use a pre-grown sedum mat-based system incorporating a variety of plants and flowers. Delivered as a roll, they are typically, 20mm thick, and laid out onto crushed brick or light clay aggregate, with a waterproof layer often on top.

They are a good option in comparison to loose planting which is more labour intensive as it involves preparing the ground, laying the soil, sowing seeds, and then maintenance. However, there are UK nurseries that now supply plants and advice for green roofs

Due to their minimal maintenance, and relatively low cost, extensive green roofs are the preferred choice for residential properties. Although you can find them in commercial settings such as at Canary Wharf which has 5000 to 6000 square metres incorporating five extensive green roofs. This makes it one of the largest green roof spaces in the UK.

Here at Rise Design Studio we used a sedum roof on our Lexi cinema project in London’s Kensal Rise, with our work being shortlisted for a prestigious 2022 FX International Interior Design Award.

Semi-intensive green roofs

These are of course a cross between intensive and extensive green roofs, with slightly greater depth than the latter.

They include a wider variety of plants compared to an extensive green roof, often akin to a wildflower meadow, therefore they require moderate maintenance, fertilisation, and watering.

What are the benefits of green roofs?

Whilst appealing in terms of breaking up the monotony of the urban landscape, along with the resultant inner-city opportunities for recreational and social green space and general improvement in wellbeing and productivity, the principal benefits of green roofs are extensively environmental.

They help to improve and preserve urban biodiversity by creating habitats for animals, birds, butterflies, and insects. Some of which may be endangered and at risk of extinction such as Black Redstarts whose preservation was a part of the driving force behind many early London green roofs
They help to cool building temperature and improve insulation by absorbing heat therefore reducing the ‘urban heat island’ phenomenon, decreasing surface air temperature by up to 16.4 degrees
They improve air quality by producing oxygen
They can contribute to reduced air pollution by removing harmful toxins from the air including nitrates and carbon dioxide
Help to reduce flooding and improve stormwater management, as they can absorb anywhere between 50% and 100% of rainwater, and then release it through condensation and transpiration
Reduce the need for air conditioning and heating requirements leading to less emissions and more efficient energy consumption as they cool the building in summer and warm it in winter
Improve noise and sound reduction
They can produce opportunities for urban agriculture

Such is their environmental impact, that the UK Green Building Council has called for all new buildings and infrastructure to have ‘nature-based solutions’ such as green roofs, by 2030 to combat the ever-growing threat of global warming.

In addition to this, other benefits are that a green roof can add value to your property due to its appearance and the fact it contributes to reduced energy costs, as well as roof longevity by protecting it from natural exposures.

Green roofs in London

In comparison to major cities worldwide London has been ‘late to the party’ when it comes to green roofs. Much of this down to policy implementation, or lack of.

However progression was made with the 2008 amends to the London Plan, the spatial development strategy for Greater London, which saw a much more proactive approach to green roof adoption and greater policy towards urban greening as a whole.

This was echoed by the 2019 creation of the Urban Greening Factor by the Greater London Authority (GLA) which measures the quantity and quality of greening on any new development proposal at the planning stage.

The effectiveness of both of these measures is demonstrated by the recent City of London monitoring reports, on the subject, which show that between 2011/12 and 2019/2020, green roofs went from 23 to 64, covering an area, from 8,200m2 to 25,900m2. This London City Hall map shows the location of these green roofs.

City of London projects that in 2026, green roof spaces which are predominantly extensive will comprise of 82.

There are currently a number of major innovative new green developments planned for the city such as Google’s new Kings Cross headquarters which promises to have a ‘grass-laden plateau’ and ‘green walkways’ as well as an extension to Blackfriars Crown Court which will be topped by a 100-tree forest and a retail development in Greenwich which is to have one of the largest green roofs in the borough.

Nationwide the Government are set to launch further incentives related to planning through The Environment Bill which contains a provision that all planning applications increase the biodiversity of the site in question by 10 per cent. The aim is to leave nature in a better state than before.

How much does a green roof cost?

Costs will vary dependent on the green roof system and the property in question, and whether professional contractors or landscape designers are employed

A professionally designed and installed extensive residential green roof can cost from £50 to £100 per square metre.

This cost is just an average and it will depend on things such as whether the roof needs extra support, how accessible the roof is, and which plants you are using.

Do I need planning permission for a green roof?

Due to Permitted Development Rights, in most cases it is unlikely that you will need planning permission if installing a green roof on an existing residential building, such as a garage or garden shed.

However, it is of course dependent on the property and the local planning department. This is especially important if the property is listed or within a conservation area.

Building regulation approval will be needed if it is a new build or an extension/alteration to a current one, this is due to load capacity and fire regulations.

As part of a new build planning application for large-scale developments, they can be beneficial in terms of gaining credits with BREEAM (Building Research Establishment Environmental Assessment Method) which assesses a building’s environmental performance.

How an architect can help with a green roof

Green roofs are becoming a significant part of architectural design and innovation, after all design is about more than creating buildings of beauty but rather achieving multi-functional buildings that add to and enhance people’s wellbeing and their surroundings, for present and future generations.

When considering a green roof for your home or property, employing an architect such as our team at Rise Design Studio, will help ensure that you get the desired effect and result with all implications considered in reference to the Green Roof Code of Best Practice:

They can help you understand the slope of the roof, maximum load capacity (when saturated, snow covered or through pedestrian access), and structure
Which green roof system will work best for your vision, location, and use, based on the above
They will look at orientation, wind exposure, sunlight, and shading
Examine the impact on areas such as skylights, vents, and chimneys
Determine what planning permissions are required if any
How roof access and egress will work based on safety and the system you employ
Offer guidance on the most appropriate water management and drainage
Specify fire safety requirements as related to building regulations
Help advise on external contractors/manufacturers, and manage that process and overall project management
Look at the proposed maintenance schedule

There is no doubt that green roofs look great and it is not surprising to see their popularity grow, but more than their aesthetic appeal, they sit alongside solar, and wind turbines, as sustainable energy solutions that counteract greenhouse gas emissions and encourage biodiversity.

We each understand that climate change is happening now, employing a green roof whether it be on a home or commercial building is a step to addressing this challenge. It is positive to see that the Government is keen to increase the uptake and prevalence of them especially in larger cities.

For further information on the forward-thinking green roof design techniques RISE Design Studio can bring to your project please contact mail@risedesignstudio.co.uk or give us a call on 020 3290 1003

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