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Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in W10. No obligation free quotes and many happy custo...
V.S.P is a trusted extension builder serving customers in W10 and the surrounding area. Contact us to today to get a competitive quote for extensio...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Vas Constructs
RUBBERCOVER™ EPDM Permaroof rubber cover and roof system. Lead flashing. NCTS. Timber Frame Buildings. Refurbish fit out, structural ...
Experienced extension builder ready to quote for your work. Khetani Builders (UK) Ltd is the best extension builder in W10. No obligation free quot...
Patrick Kelly
Over 20 years experience
Client focussed and driven
Personal planning and completion of work
Warranty ...
Relax... you have found a reliable extension builder in W10. M & A UK Ltd is a friendly and reliable company based in W10 who consider no job as to...
Newpark Construction are here to help customers who need an Extension Builder in W10. We offer a competitive rate to complete all your extension bu...
Experienced extension builder ready to quote for your work. HUGHES BUILDERS is the best extension builder in W10. No obligation free quotes and man...
Need to find an Extension Builder near you for all your extension buildering work?
Heaven Sent Construction provides a local, trusted exten...

Underpinning ranges from £17,404 (V.S.P based in NW10) to £19,340 (1st & 2nd Fix Vasconstruct based in W12), 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 W10 by posting a job with HaMuch and we will send it to extension builders in W10.
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 - £17,925

Two storey extension - £88,637

Build a timber frame extension - £26,425

Build a swimming pool - £81,425

Single storey extension - £63,496

Side return extension - £46,279

Install an RSJ - £2,625

Outbuilding - £10,425

Build a Mansard loft conversion - £52,425

Loft conversion - £37,733

Build a kitchen extension - £42,425

Hip to gable loft conversion - £42,425

Granny annexe - £87,425

Garden office - £10,425

Convert a Garage - £16,425

Garage - £18,925

Build a flat roof extension - £22,425

Build a dormer loft conversion - £42,425

Concrete foundations - £6,675

Convert a bungalow loft - £29,425

Convert a basement - £42,279