Southampton, Hampshire

Home Extensions in Southampton

Need a home extension in Southampton? Renomate introduces you to vetted specialists who cover your area — completely free, with no obligation. Tell us about your project and we’ll do the rest.

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What can we help you with?

Free · no obligation · about 30 seconds

Typical Southampton cost£23,000–£80,500
Typical timeline3–6 months
Our fee to youFree

Popular options

Home Extensions styles & ideas in Southampton

Explore common options — then we’ll match you with a Southampton 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 Southampton?

For a home extension in Southampton, a realistic budget is around £23,000–£80,500. South East costs typically run above the UK average — Hampshire 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 Southampton home extension.

  • 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.
  • 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 Southampton.

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 Southampton: the 2025 guide

Why a home extension makes sense in Southampton

With south east costs typically run above the uk average, a well-planned home extension in Southampton 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 Southampton

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 Southampton project on track.

Local know-how for Southampton

Homes in and around Southampton include interwar and Victorian homes, New Forest cottages and naval-city terraces. Those property types influence the best way to plan a home extension — national park and coastal constraints, plus strong demand, are local factors. A local specialist who knows Southampton will factor all of this into your quote and design.

Choosing the right Southampton professional

A recommendation you can trust beats a random search. We match Southampton homeowners with vetted local specialists, verify insurance and feedback first, and stay on hand throughout.

Vetted network

Trusted Southampton 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

Southampton questions

Home Extensions in Southampton — FAQs

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

How much does a home extension cost in Southampton?
For a home extension in Southampton, a realistic budget is around £23,000–£80,500. South East costs typically run above the UK average — Hampshire 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.
How long does a home extension take in Southampton?
Once started, expect around 3–6 months for a Southampton home extension. 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 Southampton?
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 Southampton specialist will tell you exactly what applies and can handle approvals for you.
Is Renomate’s home extensions matching service free in Southampton?
Yes — it’s completely free for homeowners in Southampton and across Hampshire. 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 Southampton?
Every professional we introduce in Southampton is vetted for experience, qualifications, insurance and customer feedback. We check the details so you deal only with trusted, proven local specialists.

Start your Southampton 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 DartfordHome Extensions in GravesendHome Extensions in GillinghamHome Extensions in ChathamHome Extensions in RochesterHome Extensions in Sittingbourne All areas →

Ready when you are

Ready for your home extensions in Southampton?

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
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