House Extensions in Poole
More space for the home you already love — rear, side and wrap-around extensions across Poole.
Extend instead of moving
Once you add stamp duty, agent fees, legal costs and the move itself, trading up in Poole is expensive — and you leave your street, schools and neighbours behind. Extending puts that money into your own property instead.
We design and build extensions across Poole, from Lower Parkstone and Penn Hill to Broadstone, Merley and Hamworthy — open-plan kitchen living spaces, extra bedrooms, utility rooms and larger family areas. Bi-fold doors, roof lanterns and underfloor heating can all be designed in from the start, far cheaper than adding them later.
Book your free consultation - 200+ Projects Completed
- Fully Managed Services
- Clear, Honest Pricing
Types of extension we build
Rear extensions
The most popular choice, usually to create an open-plan kitchen living space opening onto the garden.
Side extensions
Make use of side returns and driveways to widen kitchens or add a utility room and WC.
Wrap-around extensions
Rear and side combined, for the biggest transformation of the ground floor.
The case for it
Why extend your Poole home?
A home extension allows you to transform how you live — without the cost and disruption of moving.
Perfect for
- Open-plan kitchen living areas
- Additional bedrooms
- Utility rooms
- Home offices
- Larger family spaces
- Increase property value
- Stay in the home you love
- Customise your layout
- Create open-plan family living
Honest pricing
What a house extension costs in Poole
Size, design and the level of finish drive the cost: a modest single-storey extension is a very different project from a large open-plan kitchen extension with structural glazing.
Get an instant guide price with our free cost calculator, then a detailed itemised estimate after a site visit — everything is considered before you commit, not discovered during the build.
Fully managed
Everything handled for you
An extension is a full construction project, from the ground up. We run yours end to end — one team, one point of contact and one detailed written estimate covering:
- Groundworks and foundations
- Structural works and steel installation
- Brickwork and roofing
- Windows, doors and bi-folds
- Plumbing and electrics
- Plastering and finishing
- Full project management
Why us
Why Choose The Big Conversion Company
- Honest, transparent pricing
- Detailed estimates — no hidden surprises
- High-quality workmanship
- Clean, well-managed sites
- Strong communication throughout
Many of our clients come to us after receiving confusing or incomplete quotes — we pride ourselves on doing things differently.
Covering all of Poole
- Lower Parkstone
- Penn Hill
- Broadstone
- Creekmoor
- Oakdale
- Canford Heath
- Merley
- Hamworthy
Get a Free Home Extension Quote in Poole
Thinking about extending? We'll offer honest advice, a clear estimate and help you plan your project properly.
Our Process
Simple & Stress-Free
- 1
Initial consultation
Discuss your ideas and requirements.
- 2
Site visit
Assess your property and feasibility.
- 3
Detailed estimate
Clear breakdown of costs.
- 4
Design & planning support
If needed — we guide you through planning.
- 5
Build phase
Managed from start to finish.
