From £6,386
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 £6,186
We have been in the trade in over 10 years. We always strive to satisfy our client and go above and beyond.
From £6,474
Need to find an Extension Builder near you for all your extension buildering work?
THAMESLINK BUILDING SRVCS LTD provides a local, trusted ...
From £6,506
Need to find an Extension Builder near you for all your extension buildering work?
A N BUILDING provides a local, trusted extension builder...
From £6,498
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £6,298
Need to find an Extension Builder near you for all your extension buildering work?
KERFIELD BUILDING SERVICES LTD provides a local, trusted...
From £6,330
ESSEX TIMBER BUILDINGS LTD is an established extension buildering business in Harold Hill. We come highly recommended and provide competitive quote...
From £6,474
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 £6,274
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 ...

Concrete foundations range from the £6,186 (Build Experts based in RM3) to £6,554 (Stratton Building Services based in rm3) in Harold Hill.
Comparing extension builders estimates for laying concrete foundations gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Find out the exact cost of laying concrete foundations in Harold Hill by posting a job with HaMuch. We will send it to extension builders who can give you a detailed quote.
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