London, Greater London
Home Extensions in London
Need a home extension in London? Renomate introduces you to vetted specialists who cover your area so you can get quotes and get started with confidence.
What can we help you with?
Free · no obligation · about 30 seconds
Popular options
Home Extensions styles & ideas in London
Explore common options — then we’ll match you with a London specialist to bring it to life.
How much does a home extension cost in London?
Budgets for a home extension in London generally land between £25,500–£89,500. London is the most expensive part of the UK for building work, well above the national average — Greater London labour and materials are a real factor. The biggest cost drivers are single vs double storey and floor area, foundations and structural work, and planning, glazing and finish quality. Getting two or three quotes is the best way to see a fair local price, which is exactly what our free matching service arranges.
Figures are a 2025 guide only — your matched installer will give you an accurate, no-obligation quote.
How long does it take?
Once started, expect around 3–6 months for a London home extension.
- Check planning permission. Most larger projects need planning and building-regs approval — check early.
- Match your materials. Choose brick and finishes that harmonise with your existing home.
- Plan for the long term. Design for how you’ll use the space in five and ten years, not just now.
How it works
Our Working Process
Our hassle-free process takes you from enquiry to the perfect installer for your home extensions in London.
Fill in Our Form
Tell us what kind of project you’re planning, and your contact details.
Introductory Call
We’ll give you a quick call to learn more about what you need and with what budget.
We Match You Up
We match you with an approved installer who fits your project requirements.
Local guide
Home Extensions in London: the 2025 guide
Why a home extension makes sense in London
With london is the most expensive part of the uk for building work, well above the national average, a well-planned home extension in London can offer strong value for money. A well-built extension typically adds both significant living space and long-term property value.
Planning your home extension in London
In Greater London, tight sites, party-wall agreements with neighbours and borough-specific planning rules make an experienced local specialist especially valuable. Factor that in early, budget a sensible contingency, and get everything in writing before work starts.
Local know-how for London
Homes in and around London include Victorian and Georgian terraces, flat conversions and new-build apartments on tight urban plots. Those property types influence the best way to plan a home extension — party-wall agreements, borough-specific planning and widespread conservation areas all apply. A local specialist who knows London will factor all of this into your quote and design.
Choosing the right London professional
Choosing the right person is the hardest part. Rather than sifting through directories and reviews, Renomate does the legwork — we match you with a vetted London specialist for your home extension, check their credentials, and introduce you personally.
Vetted network
Trusted London home extensions specialists
We don’t just find you an installer — we find the right one. Every professional we introduce is vetted for experience, qualifications, insurance and a proven track record.
Local Extension Specialist
Professional · Qualified · Insured
Local Project Manager
Professional · Qualified · Insured
Local Planning Expert
Professional · Qualified · Insured
London questions
Home Extensions in London — FAQs
The details on cost, timing and how our free matching works in London.
How much does a home extension cost in London?
How long does a home extension take in London?
Do I need planning permission for a home extension in London?
Is Renomate’s home extensions matching service free in London?
How do you choose home extensions professionals in London?
Start your London project
Free, friendly, no obligation.
- 100% Free Service
- No Hidden Fees
- Friendly, Expert Support
- Installers Pay Us, Not You
Ready when you are
Ready for your home extensions in London?
From fresh ideas to trusted installers, we’re here to get your home renovation project moving—quick, simple, and stress-free.