From £6,298
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in SW1. No obligation free quotes ...
From £6,298
Trusted and professional extension builder in SW1. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
From £6,642
Need an Extension Builder in SW1? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £6,410
Homeowners look no further if you want a qualified extension builder to work in your home. LCD Pixel Construction Ltd are tidy and neat, providing ...
From £6,578
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,170
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in SW1. We offer a competitive rate to complete all your ...
From £6,442
Gb construction are here to help customers who need an Extension Builder in SW1. We offer a competitive rate to complete all your extension builde...
From £6,434
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in SW1. No obligation free quotes and m...
From £6,562
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,810
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...

Concrete foundations range from the £6,170 (Masonic Plumbing and Heating Ltd based in BR2) to £6,810 (Rafix Building based in EN4) in SW1.
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 SW1 by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
"Concrete foundation" - W1T, job posted 01/01/70
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 - £17,714

Two storey extension - £88,322

Build a timber frame extension - £26,214

Build a swimming pool - £81,214

Single storey extension - £59,288

Side return extension - £43,912

Install an RSJ - £2,414

Outbuilding - £10,214

Build a Mansard loft conversion - £52,214

Loft conversion - £35,760

Build a kitchen extension - £42,214

Hip to gable loft conversion - £42,214

Granny annexe - £87,214

Garden office - £10,214

Convert a Garage - £16,214

Garage - £18,714

Build a flat roof extension - £22,214

Build a dormer loft conversion - £42,214

Concrete foundations - £6,464

Convert a bungalow loft - £29,214

Convert a basement - £39,912