Streatham, Greater London

Home Extensions in Streatham

Renomate helps homeowners in the Streatham area find reliable home extensions specialists with a service that’s completely free because installers pay us, not you.

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What can we help you with?

Free · no obligation · about 30 seconds

Typical Streatham cost£25,500–£89,500
Typical timeline3–6 months
Our fee to youFree

Popular options

Home Extensions styles & ideas in Streatham

Explore common options — then we’ll match you with a Streatham specialist to bring it to life.

Single-Storey Rear Extension

Extends the back of the house for open-plan living.

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Two-Storey Extension

Adds a room downstairs and a bedroom or bathroom above.

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Over-Structure Extension

Builds a new room above an existing single-storey part.

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Garage Conversion + Extension

Reclaim and expand under-used space.

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How much does a home extension cost in Streatham?

In Streatham, a home extension typically costs between £25,500–£89,500, depending on the project. 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. Expect single vs double storey and floor area and planning, glazing and finish quality to move the price most, along with foundations and structural work. 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?

In Streatham, expect a typical home extension to take about 3–6 months once work begins.

  • 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 Streatham.

1

Fill in Our Form

Tell us what kind of project you’re planning, and your contact details.

2

Introductory Call

We’ll give you a quick call to learn more about what you need and with what budget.

3

We Match You Up

We match you with an approved installer who fits your project requirements.

Local guide

Home Extensions in Streatham: the 2025 guide

Why a home extension makes sense in Streatham

For many Streatham homeowners, a home extension is the practical alternative to moving. A well-built extension typically adds both significant living space and long-term property value.

Planning your home extension in Streatham

Careful planning avoids the common pitfalls. Get a detailed quote, agree milestones, and don’t choose on price alone — the cheapest option often costs more in the long run. That’s why our vetting focuses on track record, not just rates.

Local know-how for Streatham

Property in Streatham tends to reflect Greater London: Victorian and Georgian terraces, flat conversions and new-build apartments on tight urban plots. The style of local homes matters for a home extension — party-wall agreements, borough-specific planning and widespread conservation areas all apply. A local specialist who knows Streatham will factor all of this into your quote and design.

Choosing the right Streatham professional

Instead of gambling on an online listing, let us introduce you to a Streatham specialist we’ve already vetted for qualifications, insurance and real customer feedback.

Vetted network

Trusted Streatham 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

Streatham questions

Home Extensions in Streatham — FAQs

The details on cost, timing and how our free matching works in Streatham.

How much does a home extension cost in Streatham?
In Streatham, a home extension typically costs between £25,500–£89,500, depending on the project. 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. Expect single vs double storey and floor area and planning, glazing and finish quality to move the price most, along with foundations and structural work. Getting two or three quotes is the best way to see a fair local price, which is exactly what our free matching service arranges.
How long does a home extension take in Streatham?
In Streatham, expect a typical home extension to take about 3–6 months once work begins. Your matched installer will give you a firm schedule once they’ve seen the project.
Do I need planning permission for a home extension in Streatham?
It depends on the size and type of project and your property. Tight sites, party-wall agreements with neighbours and borough-specific planning rules make an experienced local specialist especially valuable. Your matched Streatham specialist will tell you exactly what applies and can handle approvals for you.
Is Renomate’s home extensions matching service free in Streatham?
Yes — it’s completely free for homeowners in Streatham and across Greater London. We’re paid a small fee by the installer only once your project is confirmed, so we always work in your interest.
How do you choose home extensions professionals in Streatham?
Every professional we introduce in Streatham is vetted for experience, qualifications, insurance and customer feedback. We check the details so you deal only with trusted, proven local specialists.

Start your Streatham project

Free, friendly, no obligation.

  • 100% Free Service
  • No Hidden Fees
  • Friendly, Expert Support
  • Installers Pay Us, Not You

Nearby

Home Extensions across London

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Ready when you are

Ready for your home extensions in Streatham?

From fresh ideas to trusted installers, we’re here to get your home renovation project moving—quick, simple, and stress-free.

Get my free quote 01952 928 231
Get a free quote