From £17,548
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in KT2. No obligation free quotes ...
From £17,812
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,892
Need an Extension Builder in KT2? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £17,548
Trusted and professional extension builder in KT2. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
From £17,660
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 £17,828
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £17,420
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in KT2. We offer a competitive rate to complete all your ...
From £17,692
Gb construction are here to help customers who need an Extension Builder in KT2. We offer a competitive rate to complete all your extension builde...
From £17,684
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in KT2. No obligation free quotes and m...
From £18,060
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...

Underpinning ranges from £17,420 (Masonic Plumbing and Heating Ltd based in BR2) to £18,060 (Rafix Building based in EN4), but the final cost will depend on the method of underpinning used, how much of your foundations need underpinning and where you live.
Comparing extension builders estimates for underpinning gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get quotes to underpin your home in KT2 by posting a job with HaMuch and we will send it to extension builders in KT2.
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