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London Construction is an established and experienced local extension builder in SW4. Please contact us for a free, no obligation quote and competi...
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW4. QA's Pointing and Brick Repair is a friendly and reliable company based in SW4 who con...
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW4. No obligation free qu...
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in SW4. No obligation free quot...
Peter Cesma
Experienced builder in all aspects of building works. All work guaranteed. Quality finish, promt ,honest and reliable services. Public liabil...
R C BUILDER is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a competitive quote for ex...
Quality Carpentry is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a competitive quote ...
kanreen
Need an Extension Builder in SW4? Battersea Plumbers has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
Complete Construction London Limited is a trusted extension builder serving customers in SW4 and the surrounding area. Contact us to today to get a...
Beaufort Construction London specialises in the design, build and project management of both residential and commercial construction projects throu...

Outbuilding costs in SW4 range from the cheapest of £10,016 (R C BUILDER based in SW12) to the dearest of £10,448 (London Construction based in SW11), but these are just estimates.
Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build an outbuilding in SW4 by posting a job with HaMuch and we will send it to extension builders.
| Borough in London |
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| Outbuilding in Clapham |
| Outbuilding in Brixton |
| Outbuilding in Nine Elms |
| Outbuilding in Balham |
| Outbuilding in Stockwell |
| Outbuilding in Battersea |
| Outbuilding in Herne Hill |
| Outbuilding in Pimlico |
| Outbuilding in Camberwell |
| Outbuilding in Lambeth |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £17,691

Two storey extension - £88,287

Build a timber frame extension - £26,191

Build a swimming pool - £81,191

Single storey extension - £58,824

Side return extension - £43,651

Install an RSJ - £2,391

Outbuilding - £10,191

Build a Mansard loft conversion - £52,191

Loft conversion - £35,543

Build a kitchen extension - £42,191

Hip to gable loft conversion - £42,191

Granny annexe - £87,191

Garden office - £10,191

Convert a Garage - £16,191

Garage - £18,691

Build a flat roof extension - £22,191

Build a dormer loft conversion - £42,191

Concrete foundations - £6,441

Convert a bungalow loft - £29,191

Convert a basement - £39,651