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QA's Pointing Brick Repair
Relax... you have found a reliable extension builder in SW3. QA's Pointing and Brick Repair is a friendly and reliable company based in SW3 who con...
Relax... you have found a reliable extension builder in SW3. M & A UK Ltd is a friendly and reliable company based in SW3 who consider no job as to...
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in SW3. No obligation free qu...
London Construction is an established and experienced local extension builder in SW3. Please contact us for a free, no obligation quote and competi...
A to Z Builders Ltd are here to help customers who need an Extension Builder in SW3. We offer a competitive rate to complete all your extension bui...
F & F Building Services is an established extension buildering business in SW3. We come highly recommended and provide competitive quotes for your ...
kanreen
Need an Extension Builder in SW3? Battersea Plumbers has been helping local clients (5 mile radius) with their extension buildering jobs for many y...
H G Builders is an established and experienced local extension builder in SW3. Please contact us for a free, no obligation quote and competitive ra...
Phormwork are here to help customers who need an Extension Builder in SW3. We offer a competitive rate to complete all your extension buildering jo...
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...

Concrete foundations range from the £6,210 (Pure Contractors Ltd based in SW11) to £6,850 (H G Builders based in SW6) in SW3.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in SW3 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
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 - £17,750

Two storey extension - £88,374

Build a timber frame extension - £26,250

Build a swimming pool - £81,250

Single storey extension - £59,992

Side return extension - £44,308

Install an RSJ - £2,450

Outbuilding - £10,250

Build a Mansard loft conversion - £52,250

Loft conversion - £36,090

Build a kitchen extension - £42,250

Hip to gable loft conversion - £42,250

Granny annexe - £87,250

Garden office - £10,250

Convert a Garage - £16,250

Garage - £18,750

Build a flat roof extension - £22,250

Build a dormer loft conversion - £42,250

Concrete foundations - £6,500

Convert a bungalow loft - £29,250

Convert a basement - £40,308