Merton, Greater London

Home Extensions in Merton

For a home extension in the Merton area, Renomate does the hard part: finding a reliable, insured local expert — no spam, no pressure, just a friendly local introduction.

Get a Free Quote 01952 928 231
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What can we help you with?

Free · no obligation · about 30 seconds

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

Popular options

Home Extensions styles & ideas in Merton

Explore common options — then we’ll match you with a Merton 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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Side Return Extension

Fills the narrow gap at the side to widen your space.

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Over-Structure Extension

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

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How much does a home extension cost in Merton?

A typical Merton home extension works out at about £25,500–£89,500 in 2025. 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. What you pay depends mainly on single vs double storey and floor area and foundations and structural work, plus 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?

In Merton, 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.
  • Hire a structural engineer. Essential where load-bearing walls are removed, for safety and compliance.
  • Match your materials. Choose brick and finishes that harmonise with your existing home.

How it works

Our Working Process

Our hassle-free process takes you from enquiry to the perfect installer for your home extensions in Merton.

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 Merton: the 2025 guide

Why a home extension makes sense in Merton

Homes across Merton range widely, and a home extension is one of the smartest ways to make yours work harder for you. A well-built extension typically adds both significant living space and long-term property value.

Planning your home extension in Merton

Think through how you’ll use the space long term, agree a written scope and schedule, and check insurance and guarantees — the fundamentals that keep a Merton project on track.

Local know-how for Merton

Merton and the wider Greater London area are known for 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 Merton will factor all of this into your quote and design.

Choosing the right Merton professional

The right match makes all the difference. Tell us about your Merton project and we’ll hand-pick a trusted, insured specialist and introduce you both.

Vetted network

Trusted Merton 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

Merton questions

Home Extensions in Merton — FAQs

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

How much does a home extension cost in Merton?
A typical Merton home extension works out at about £25,500–£89,500 in 2025. 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. What you pay depends mainly on single vs double storey and floor area and foundations and structural work, plus 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.
How long does a home extension take in Merton?
In Merton, 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 Merton?
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 Merton specialist will tell you exactly what applies and can handle approvals for you.
Is Renomate’s home extensions matching service free in Merton?
Yes — it’s completely free for homeowners in Merton 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 Merton?
Every professional we introduce in Merton is vetted for experience, qualifications, insurance and customer feedback. We check the details so you deal only with trusted, proven local specialists.

Start your Merton project

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  • No Hidden Fees
  • Friendly, Expert Support
  • Installers Pay Us, Not You

Nearby

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Ready when you are

Ready for your home extensions in Merton?

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