House Extensions
Bespoke house extensions in Basingstoke designed to add space, improve layout, and enhance the way you live.
- Single & double storey
- Rear, side & wrap-around
- Architect-led design
Basingstoke · Chineham · Old Basing
House Extensions
in Basingstoke
Design & build house extensions across Basingstoke and Hampshire — finished to the highest standard.
4.9
87+ Hampshire homeowners on Google
Free QuoteFree Quote
InsuredFully Insured
LocalHampshire Specialists
Fixed PriceFixed Pricing
Why Choose Us
Why homeowners across Hampshire choose Basingstoke House Extensions
Hundreds of successful projects, built on craftsmanship, communication and a refusal to cut corners.
Local Specialists
Hampshire-based experts who know local planning and architecture inside-out.
Fully Managed Projects
From first sketch to final handover — one trusted team, one timeline.
Transparent Pricing
Fixed, itemised quotations. No vague allowances. No surprises.
Quality Craftsmanship
Built to architectural standards using premium materials and trusted trades.
Clear Communication
One dedicated project manager. Weekly updates. Always reachable.
Trusted Reputation
Built on word-of-mouth across Basingstoke, Chineham and Old Basing.
What We Build
House extension services
From classic rear extensions to ambitious double storey transformations — every project designed and built end-to-end by our team.
New Builds
High-quality new build homes delivered with expert planning, workmanship, and attention to detail throughout.
- Bespoke design
- Premium materials
- Full project management
Loft Conversions
Smart loft conversions that turn unused roof space into practical, comfortable living areas.
- Bedrooms & en-suites
- Dormer & Velux options
- Building regs handled
Renovations
Complete home renovations in Basingstoke to modernise, improve, and transform your property.
- Full refurbishments
- Kitchens & bathrooms
- Period-home expertise
Landscaping
Garden landscaping to complement your extension — patios, terraces and outdoor living spaces.
- Patios & paving
- Garden walls & steps
- Indoor/outdoor flow
Roofing
Reliable roofing work as part of an extension or as a standalone project, built to last.
- New roofs & repairs
- Flat & pitched
- Skylights & lanterns
How It Works
Our simple 5-step process
A clear, structured journey from first idea to final handover.
- 01Step 01
Free Consultation
We visit your home, listen to your ideas and discuss what's possible.
- 02Step 02
Survey & Design
Detailed measured survey and architectural drawings tailored to your home.
- 03Step 03
Planning & Approvals
We handle planning permission, building regs and party wall — start to finish.
- 04Step 04
Construction
Our skilled team build to programme with weekly progress updates.
- 05Step 05
Completion & Handover
Snagging, sign-off and a full project warranty. Move straight in.
Our Work
Recent extension projects
A small selection of completed builds across Basingstoke, Chineham, Old Basing and beyond.
Basingstoke
Rear House Extension
A bright kitchen-diner with sliding doors onto a south-facing Basingstoke garden.
Chineham
Kitchen Extension
Vaulted ceiling, skylights and bifold doors transformed a tired kitchen.
Old Basing
New Build Home
Bespoke new build delivered end-to-end with premium specifications.
Oakley
Loft Conversion
Unused roof space converted into a generous master suite.
Reviews
What local homeowners say
Rated 4.9 / 5 across Google and independent reviews.
Google Reviews
4.9 · 87 reviews
David Fuentes Rojas
Basingstoke · Google Review
"The Basingstoke House Extensions team did a great job on my extension and I am very happy with the result. They were hardworking, considerate and tidy, and any issues were promptly resolved. They were competitively priced and came in on budget."
Sarah & James M.
Chineham · 2 weeks ago
"From the first meeting we knew we were in safe hands. Communication was excellent, the build was tidy and the finish is stunning. We couldn't be happier with our new kitchen extension in Basingstoke."
David R.
Old Basing · 1 month ago
"A truly professional outfit. Quote was clear, programme was kept, and the team were respectful of our home and neighbours throughout. Highly recommend for any house extension in Basingstoke."
The Patel Family
Oakley · 6 weeks ago
"They guided us through planning, design and build with zero stress. The double-storey extension has transformed our family home."
Emma T.
Tadley · 2 months ago
"Honest, reliable and brilliant craftsmanship. Every detail considered. We've already recommended them to two friends."
Mark & Helen W.
Overton · 3 months ago
"The wrap-around extension is exactly what we hoped for. Fixed price, fixed timeline — both delivered. Rare in this industry."
Investment Guide
How much does a house extension cost?
Indicative price ranges for Hampshire, based on our recent projects. Every home is different — request a fixed quote for accurate figures.
Single Storey
£40,000 – £90,000+
Typical 20–30m² rear or side house extension in Basingstoke, finished.
Double Storey
£80,000 – £180,000+
Adds bedrooms, bathrooms and substantial value to Basingstoke homes.
Wrap-Around
£70,000 – £150,000+
Combined side + rear with architect-led design.
Every project is unique. Final cost depends on size, specification, glazing, kitchen and groundwork. Request a free consultation for an accurate, fixed quotation.
Get My Extension Quote FAQs
Frequently asked questions
Everything Hampshire homeowners ask us about cost, planning, timescales and quality.
Most single storey house extensions in Basingstoke range from £40,000 to £90,000+. Double storey from £80,000 to £180,000+. We provide fixed, itemised quotes after a free consultation so you know exactly what's included.
Coverage
Areas we cover
Proudly building extensions across Basingstoke and the surrounding Hampshire villages and towns.
Ready to start
Thinking about a house extension?
Get expert advice and a free, no-obligation quote from Hampshire's trusted extension specialists.
Get In Touch
Get in touch for a free quote
Call or email — we'll be in touch within one working day.