From £10,048
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in Kentish Town. No obligation fre...
From £10,200
Relax... you have found a reliable extension builder in Kentish Town. Derryard Construction Ltd is a friendly and reliable company based in Kentish...
From £9,968
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in Kentish Town. We offer a competitive rate to complete all your exte...
From £10,032
Relax... you have found a reliable extension builder in Kentish Town. Major Building Contractors Ltd is a friendly and reliable company based in Ke...
From £10,184
Need to find an Extension Builder near you for all your extension buildering work?
Sz Builders provides a local, trusted extension builderi...
From £10,712
Experienced extension builder ready to quote for your work. Render is the best extension builder in Kentish Town. No obligation free quotes and man...
From £9,896
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in Kentish Town. No obligation free quotes and many ...
From £9,880
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,192
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £10,312
skilled worker who specializes in completing a wide range of building and renovation projects

Garden offices range from the cheapest of £9,880 (Can design and Construction based in Ig11) to the dearest of £10,712 (Render based in IG1), but these are only estimates.
The best way to compare costs is to get actual quotes.
Get rates and quotes to build a garden office in Kentish Town by posting a job with HaMuch. We'll send it to extension builders in Kentish Town.
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 - £17,642

Two storey extension - £88,214

Build a timber frame extension - £26,142

Build a swimming pool - £81,142

Single storey extension - £57,848

Side return extension - £43,102

Install an RSJ - £2,342

Outbuilding - £10,142

Build a Mansard loft conversion - £52,142

Loft conversion - £35,085

Build a kitchen extension - £42,142

Hip to gable loft conversion - £42,142

Granny annexe - £87,142

Garden office - £10,142

Convert a Garage - £16,142

Garage - £18,642

Build a flat roof extension - £22,142

Build a dormer loft conversion - £42,142

Concrete foundations - £6,392

Convert a bungalow loft - £29,142

Convert a basement - £39,102