From £6,154
London, NW4
Need an Extension Builder in NW4? GIR Services Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £6,634
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,642
Greater London, NW4
Combit Construction Ltd is a house renovation company based in NW London.We specialise in new builds, full house renovations, house extensions and ...
From £6,466
Our work varies across all major property sectors including commercial development office, retail, residential, hotels and care, even education. Ou...
From £6,386
London, NW4
B.S.D Design & Build LTD is a member off FMB- Federation of Master Builders. Our company is also a Trustmark registered company.
From £6,522
Saha Properties is a family owned business inheriting over 25 years of experience in the industry. Starting off from humble beginnings we have grow...
From £6,546
Greater London, NW4
Specialising in Planning Application and Building Control Drawings.
From £6,242
SINCLAIR BUILDERS is an established extension buildering business in NW4. We come highly recommended and provide competitive quotes for your work.<...
From £6,346
Greater London, NW4
Milkov and Son Construction is an established and experienced local extension builder in NW4. Please contact us for a free, no obligation quote and...
From £6,250
DC. Designing Centre was founded in 2017 by Daria Chmura, an interior architect with passion. Her outstanding approach to the client and her life m...

Concrete foundations range from the £6,154 (GIR Services Ltd based in NW4) to £6,642 (Combit Construction Ltd based in NW4) in NW4.
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 NW4 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 - £17,669

Two storey extension - £88,253

Build a timber frame extension - £26,169

Build a swimming pool - £81,169

Single storey extension - £58,376

Side return extension - £43,399

Install an RSJ - £2,369

Outbuilding - £10,169

Build a Mansard loft conversion - £52,169

Loft conversion - £35,333

Build a kitchen extension - £42,169

Hip to gable loft conversion - £42,169

Granny annexe - £87,169

Garden office - £10,169

Convert a Garage - £16,169

Garage - £18,669

Build a flat roof extension - £22,169

Build a dormer loft conversion - £42,169

Concrete foundations - £6,419

Convert a bungalow loft - £29,169

Convert a basement - £39,399