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Robert Buci
Buci builders ltd is a trusted extension builder serving customers in Clapham and the surrounding area. Contact us to today to get a competitive qu...
London Construction is an established and experienced local extension builder in Clapham. Please contact us for a free, no obligation quote and com...
QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in Clapham. QA's Pointing and Brick Repair is a friendly and reliable company based in Clapham...
Langston Builders is a trusted extension builder serving customers in Clapham and the surrounding area. Contact us to today to get a competitive qu...
Renaissance Timothy Brewer Ltd is an established extension buildering business in Clapham. We come highly recommended and provide competitive quote...
Vasi J
No Call out charges!
All Jobs Fully Insured and Guaranteed !!!
All aspects of Plumbing, Heating and Drains....
..."I am very pleased with the work carried out. All very clear and transparent." - ROMFORD,reviewed 10/01/18, KELLY
PW Construction & Renovation Ltd is a trusted extension builder serving customers in Clapham and the surrounding area. Contact us to today to get a...
Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Clapham. No obligation free quotes a...
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Clapham. No obligation fre...
A to Z Builders Ltd are here to help customers who need an Extension Builder in Clapham. We offer a competitive rate to complete all your extension...

In Clapham, prices for dormer loft conversions range from £41,976 (A to Z Builders Ltd based in SW1P) to £43,024 (Buci builders ltd based in SE27), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.
The best way to get an accurate price is to compare quotes from extension builders in Clapham. Post your job on HaMuch now and we'll put you in touch with available extension builders.
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 - £17,746

Two storey extension - £88,368

Build a timber frame extension - £26,246

Build a swimming pool - £81,246

Single storey extension - £59,912

Side return extension - £44,263

Install an RSJ - £2,446

Outbuilding - £10,246

Build a Mansard loft conversion - £52,246

Loft conversion - £36,053

Build a kitchen extension - £42,246

Hip to gable loft conversion - £42,246

Granny annexe - £87,246

Garden office - £10,246

Convert a Garage - £16,246

Garage - £18,746

Build a flat roof extension - £22,246

Build a dormer loft conversion - £42,246

Concrete foundations - £6,496

Convert a bungalow loft - £29,246

Convert a basement - £40,263