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Samuele Paolini
Need an Extension Builder in NW6? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
V.S.P is a trusted extension builder serving customers in NW6 and the surrounding area. Contact us to today to get a competitive quote for extensio...
Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in NW6. No obligation free quotes and many happy custo...
Kilburn, NW6
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Patrick Gavin
Need an Extension Builder in NW6? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many...
Need to find an Extension Builder near you for all your extension buildering work?
BELLVIEW BUILDERS LTD provides a local, trusted extensio...
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in NW6. No obligation free quot...
SLS BUILDERS LIMITED is a trusted extension builder serving customers in NW6 and the surrounding area. Contact us to today to get a competitive quo...
Hussein Eljhani
We are highly professional Builders Company, hones pricing and reliable, we leave all areas clean and tidy.

Underpinning ranges from £17,404 (V.S.P based in NW10) to £18,140 (ELJHANI BUILDING & PROPERTY MANAGEMENT SERVICES LTD based in NE4), 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 NW6 by posting a job with HaMuch and we will send it to extension builders in NW6.
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 - £17,678

Two storey extension - £88,268

Build a timber frame extension - £26,178

Build a swimming pool - £81,178

Single storey extension - £58,568

Side return extension - £43,507

Install an RSJ - £2,378

Outbuilding - £10,178

Build a Mansard loft conversion - £52,178

Loft conversion - £35,423

Build a kitchen extension - £42,178

Hip to gable loft conversion - £42,178

Granny annexe - £87,178

Garden office - £10,178

Convert a Garage - £16,178

Garage - £18,678

Build a flat roof extension - £22,178

Build a dormer loft conversion - £42,178

Concrete foundations - £6,428

Convert a bungalow loft - £29,178

Convert a basement - £39,507