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Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in W11. No obligation free quotes and many happy custo...
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 ...
Relax... you have found a reliable extension builder in W11. M & A UK Ltd is a friendly and reliable company based in W11 who consider no job as to...
Newpark Construction are here to help customers who need an Extension Builder in W11. 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 W11. 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...
H G Builders is an established and experienced local extension builder in W11. Please contact us for a free, no obligation quote and competitive ra...
Graham Construction is an established extension buildering business in W11. We come highly recommended and provide competitive quotes for your work...
Experienced extension builder ready to quote for your work. JNJ Building Services Ltd is the best extension builder in W11. No obligation free quot...

A timber frame extension built in W11 typically ranges from £25,928 (BPS Building based in NW6) to £27,840 (1st & 2nd Fix Vasconstruct based in W12), but this will vary depending on the size of your extension, the design features you'd like and what your soil is like for the foundations.
Comparing extension builders estimates for building a timber frame extension gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes to build a timber frame extension in W11 by posting a job with HaMuch and we'll send it to extension builders in W11.
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 - £17,846

Two storey extension - £88,518

Build a timber frame extension - £26,346

Build a swimming pool - £81,346

Single storey extension - £61,912

Side return extension - £45,388

Install an RSJ - £2,546

Outbuilding - £10,346

Build a Mansard loft conversion - £52,346

Loft conversion - £36,990

Build a kitchen extension - £42,346

Hip to gable loft conversion - £42,346

Granny annexe - £87,346

Garden office - £10,346

Convert a Garage - £16,346

Garage - £18,846

Build a flat roof extension - £22,346

Build a dormer loft conversion - £42,346

Concrete foundations - £6,596

Convert a bungalow loft - £29,346

Convert a basement - £41,388