From £52,136
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 £51,936
We have been in the trade in over 10 years. We always strive to satisfy our client and go above and beyond.
From £52,224
Need to find an Extension Builder near you for all your extension buildering work?
THAMESLINK BUILDING SRVCS LTD provides a local, trusted ...
From £52,256
Need to find an Extension Builder near you for all your extension buildering work?
A N BUILDING provides a local, trusted extension builder...
From £52,248
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £52,048
Need to find an Extension Builder near you for all your extension buildering work?
KERFIELD BUILDING SERVICES LTD provides a local, trusted...
From £52,080
ESSEX TIMBER BUILDINGS LTD is an established extension buildering business in Harold Hill. We come highly recommended and provide competitive quote...
From £52,224
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 £52,024
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 ...

Mansard loft conversions range from the cheapest installation of £51,936 (Build Experts based in RM3) to the dearest of around £52,304 (Stratton Building Services based in rm3).
While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.
Get quotes to install a mansard loft conversion in Harold Hill by posting a job with HaMuch and 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