From £88,204
JP Refurbishment London has completed countless renovations and home improvements in London. Our focus and determination are both solely centred ar...
From £88,144
Experienced builder in all aspects of building works. All work guaranteed. Quality finish, promt ,honest and reliable services. Public liabil...
From £88,144
Murdoch Building Services are here to help customers who need an Extension Builder in Stockwell. We offer a competitive rate to complete all your e...
From £88,384
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £88,384
Relax... you have found a reliable extension builder in Stockwell. Finch Lockerbie is a friendly and reliable company based in Stockwell who consid...
From £88,300
Greater London, SW9
Need an Extension Builder in Stockwell? Build Team has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £88,372
Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Stockwell. No obligation fre...
From £88,480
Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Stockwell. No obligation f...
From £88,468
Experienced extension builder ready to quote for your work. Gustav Building Services is the best extension builder in Stockwell. No obligation free...
From £88,060
I am Gustav, I run a team of professionals who offer competitive prices, design guide, materials supply, professional advice and project management...

Costs range from £88,060 (Gustav Building Services based in SW4) to £88,480 (D & G Building & Decorating based in SW8), but these are just estimates. The best way to compare costs is to get real quotes from real builders.
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"Two storey extension" - HERNE HILL, job posted 01/12/25
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 - £17,696

Two storey extension - £88,294

Build a timber frame extension - £26,196

Build a swimming pool - £81,196

Single storey extension - £58,920

Side return extension - £43,705

Install an RSJ - £2,396

Outbuilding - £10,196

Build a Mansard loft conversion - £52,196

Loft conversion - £35,588

Build a kitchen extension - £42,196

Hip to gable loft conversion - £42,196

Granny annexe - £87,196

Garden office - £10,196

Convert a Garage - £16,196

Garage - £18,696

Build a flat roof extension - £22,196

Build a dormer loft conversion - £42,196

Concrete foundations - £6,446

Convert a bungalow loft - £29,196

Convert a basement - £39,705