From £18,548
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in SW9. No obligation free quotes ...
From £18,484
JK Doors is a trusted extension builder serving customers in SW9 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £18,692
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £18,892
Need an Extension Builder in SW9? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £18,812
skilled worker who specializes in completing a wide range of building and renovation projects
From £19,116
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in SW9 and the surrounding area. Contact us to today to get a comp...
From £18,388
Member since April 2025
Trusted and professional extension builder in SW9. Experienced in all extension buildering work and keeping within budget and on quote. GR MAINTENA...
From £18,812
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £18,700
Relax... you have found a reliable extension builder in SW9. Derryard Construction Ltd is a friendly and reliable company based in SW9 who consider...
From £18,468
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in SW9. We offer a competitive rate to complete all your extension bui...

Builders charge between £18,388 (GR MAINTENANCE LTD based in IG11) and £19,116 (HOUSE BUILDING SERVICES LIMITED based in DA16) in SW9 to build a garage, but these costs are only estimates.
Comparing extension builders estimates for building a garage gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get real quotes to build a new garage in SW9 by posting a job with HaMuch and we will send it to extension builders in SW9.
| Borough in London |
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| Garage in Stockwell |
| Garage in Nine Elms |
| Garage in Camberwell |
| Garage in Clapham |
| Garage in Herne Hill |
| Garage in Lambeth |
| Garage in Brixton |
| Garage in Elephant & Castle |
| Garage in Pimlico |
| Garage in Houses of Parliament |
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