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Need the extension buildering job done quickly without breaking the bank? Swiftdale Developments Ltd offer fast, reliable, and affordable extension...
Samuele Paolini
Need an Extension Builder in NW4? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
Trusted and professional extension builder in NW4. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
Marcel Simion
Hi everyone!
i have good experience over 25 years working in construction and I have my on Business and my company
"I'm very happy for the job what his done" - LONDON,reviewed 29/09/17, SIMONA
Relax... you have found a reliable extension builder in NW4. Taylor Construction Services Ltd is a friendly and reliable company based in NW4 who c...
Trusted and professional extension builder in NW4. Experienced in all extension buildering work and keeping within budget and on quote. DS Construc...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
HARLEY BUILDING SERVICES LTD are here to help customers who need an Extension Builder in NW4. We offer a competitive rate to complete all your exte...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Fabio Capani
With over 24 years of hands-on experience, FC Builders London Ltd specialises in home extensions, loft conversions, full renovations, kitchen and b...

Garage conversions in NW4 typically range from £15,664 (F C Builders London ltd based in HA8) to £16,432 (BKB Building Contractors based in NW9), but the only way to get an accurate cost for your specific project is to get quotes.
Post a job with HaMuch and we'll send it to extension builders in NW4 who will be happy to help.
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 - £17,586

Two storey extension - £88,128

Build a timber frame extension - £26,086

Build a swimming pool - £81,086

Single storey extension - £56,712

Side return extension - £42,463

Install an RSJ - £2,286

Outbuilding - £10,086

Build a Mansard loft conversion - £52,086

Loft conversion - £34,553

Build a kitchen extension - £42,086

Hip to gable loft conversion - £42,086

Granny annexe - £87,086

Garden office - £10,086

Convert a Garage - £16,086

Garage - £18,586

Build a flat roof extension - £22,086

Build a dormer loft conversion - £42,086

Concrete foundations - £6,336

Convert a bungalow loft - £29,086

Convert a basement - £38,463