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London House Extension Costs 2024: Comprehensive Cost Breakdown

Extending your home in London isn’t just about adding square meters - it’s about creating a space that tells your story. A home isn’t defined by walls; it’s shaped by the moments, connections, and growth it fosters. Whether it’s a light-filled kitchen where memories are shared, a tranquil bedroom that feels like a retreat, or a bold workspace that inspires big ideas, every extension begins with a vision - a purpose waiting to unfold.

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Queen's Park House, Queen's Park, NW London

The Heart of a Home Extension

Size shapes the cost, yes - but it also defines the impact. A single-storey extension might bring the garden into your daily life. A two-storey addition could transform how your family connects and grows. Even the daring ambition of a basement can unlock possibilities you hadn’t considered.

Here’s where it starts:

  • Single Storey: £2,650 – £4,240 per sqm
  • Two Storey: £5,830 – £7,950 per sqm
  • Roof Extensions: £2,650 – £4,240 per sqm
  • Basements: £5,300 – £7,420 per sqm
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Wine Cellar for House for an Actor in Hampstead, North London

It’s Not Just a Budget - It’s an Investment

When you plan a house extension, it’s about more than numbers; it’s about designing the future you want. A beautifully designed kitchen might range from £15,900 to £42,400, while a bespoke bathroom starts at £10,600. But these figures are not just costs - they represent an investment in your quality of life, your comfort, and your aspirations.

Think about what you gain: more room for the people and activities you love, tailored spaces that meet your needs, and a home that grows with you.

Beyond Bricks and Mortar

The journey from concept to completion takes collaboration. Architects are your partners in creativity and strategy, translating your vision into precise plans that respect both your budget and London’s planning regulations. Quantity surveyors, engineers, and other specialists step in to ensure every detail is accounted for and every penny is wisely spent.

From £350 planning fees to VAT and insurance considerations, every step is about preparation - and about turning challenges into opportunities.

Where Design Meets Purpose

Every material, finish, and detail speaks to the life you want to live. Larger windows may flood your home with natural light and frame the changing seasons. Thoughtful lighting and high-quality finishes create warmth and harmony. Spaces that connect indoor and outdoor areas seamlessly bring nature closer to home.

It’s in these thoughtful design choices that a house becomes a home - a place of comfort, inspiration, and joy.

Why It Matters

A London house extension isn’t just an addition; it’s a transformation. It’s about rethinking how you live, how you work, and how you connect. It’s about creating a space that grows with you, reflecting your values and aspirations. Done well, an extension is not just a practical improvement - it’s a catalyst for a better way of living.

At RISE Design Studio, we don’t just extend houses; we extend possibilities. We are here to craft spaces that serve you today and inspire your tomorrow. Let’s build something extraordinary together. Get in touch with our expert team today!

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