Brighton, East Sussex

Home Extensions in Brighton

Renomate helps homeowners in the Brighton 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 Brighton cost£23,000–£80,500
Typical timeline3–6 months
Our fee to youFree

Popular options

Home Extensions styles & ideas in Brighton

Explore common options — then we’ll match you with a Brighton 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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Wraparound Extension

Combines side and rear for a large L-shaped living area.

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How much does a home extension cost in Brighton?

A home extension in Brighton usually falls in the £23,000–£80,500 range, though every project is different. South East costs typically run above the UK average — East Sussex 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?

Allow roughly 3–6 months for a home extension in Brighton, plus any design and approval time beforehand.

  • Check planning permission. Most larger projects need planning and building-regs approval — check early.
  • Plan for the long term. Design for how you’ll use the space in five and ten years, not just now.
  • Set a clear budget. Allow a 10–15% contingency for unforeseen costs during the build.

How it works

Our Working Process

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

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 Brighton: the 2025 guide

Why a home extension makes sense in Brighton

For many Brighton 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 Brighton

The key to a smooth home extension is preparation — agree a clear written scope, understand the timeline, and make sure your installer is properly insured and qualified. Around Brighton, we only introduce professionals who meet those standards.

Local know-how for Brighton

Brighton and the wider East Sussex area are known for Victorian seaside terraces, weatherboarded and tile-hung cottages and Downland homes. The style of local homes matters for a home extension — south downs/aonb and conservation areas, plus coastal exposure, are common. A local specialist who knows Brighton will factor all of this into your quote and design.

Choosing the right Brighton professional

We’ve done the checking so you don’t have to — share your home extension plans and we’ll connect you with a proven local professional who’s right for the job.

Vetted network

Trusted Brighton 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

Brighton questions

Home Extensions in Brighton — FAQs

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

How much does a home extension cost in Brighton?
A home extension in Brighton usually falls in the £23,000–£80,500 range, though every project is different. South East costs typically run above the UK average — East Sussex 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 Brighton?
Allow roughly 3–6 months for a home extension in Brighton, plus any design and approval time beforehand. 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 Brighton?
It depends on the size and type of project and your property. High property values here mean well-designed extensions and loft conversions often return strong added value. Your matched Brighton specialist will tell you exactly what applies and can handle approvals for you.
Is Renomate’s home extensions matching service free in Brighton?
Yes — it’s completely free for homeowners in Brighton and across East Sussex. 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 Brighton?
Every professional we introduce in Brighton is vetted for experience, qualifications, insurance and customer feedback. We check the details so you deal only with trusted, proven local specialists.

Start your Brighton project

Free, friendly, no obligation.

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

Nearby

Home Extensions across South East

Home Extensions in FarnhamHome Extensions in LeatherheadHome Extensions in DorkingHome Extensions in EsherHome Extensions in WeybridgeHome Extensions in Walton-on-Thames All areas →

Ready when you are

Ready for your home extensions in Brighton?

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