From £10,136
ACS Building is an established and experienced local extension builder in Harold Hill. Please contact us for a free, no obligation quote and compet...
From £9,936
We have been in the trade in over 10 years. We always strive to satisfy our client and go above and beyond.
From £10,224
Need to find an Extension Builder near you for all your extension buildering work?
THAMESLINK BUILDING SRVCS LTD provides a local, trusted ...
From £10,256
Need to find an Extension Builder near you for all your extension buildering work?
A N BUILDING provides a local, trusted extension builder...
From £10,248
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £10,048
Need to find an Extension Builder near you for all your extension buildering work?
KERFIELD BUILDING SERVICES LTD provides a local, trusted...
From £10,080
ESSEX TIMBER BUILDINGS LTD is an established extension buildering business in Harold Hill. We come highly recommended and provide competitive quote...
From £10,224
Relax... you have found a reliable extension builder in Harold Hill. A Star Construction is a friendly and reliable company based in Harold Hill wh...
From £10,024
Phull Design & Build Ltd are here to help customers who need an Extension Builder in Harold Hill. We offer a competitive rate to complete all your ...

Garden offices range from the cheapest of £9,936 (Build Experts based in RM3) to the dearest of £10,304 (Stratton Building Services based in rm3), 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 Harold Hill by posting a job with HaMuch. We'll send it to extension builders in Harold Hill.
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 - £17,648

Two storey extension - £88,222

Build a timber frame extension - £26,148

Build a swimming pool - £81,148

Single storey extension - £57,960

Side return extension - £43,165

Install an RSJ - £2,348

Outbuilding - £10,148

Build a Mansard loft conversion - £52,148

Loft conversion - £35,138

Build a kitchen extension - £42,148

Hip to gable loft conversion - £42,148

Granny annexe - £87,148

Garden office - £10,148

Convert a Garage - £16,148

Garage - £18,648

Build a flat roof extension - £22,148

Build a dormer loft conversion - £42,148

Concrete foundations - £6,398

Convert a bungalow loft - £29,148

Convert a basement - £39,165