Relax... you have found a reliable extension builder in W14. M & A UK Ltd is a friendly and reliable company based in W14 who consider no job as to...
Need to find an Extension Builder near you for all your extension buildering work?
AJ Wells provides a local, trusted extension buildering ...
Newpark Construction are here to help customers who need an Extension Builder in W14. We offer a competitive rate to complete all your extension bu...
Red Box are a Fulham-based building and decorating business who work in West and Southwest London, and who specialise in fine interior renovations,...
Experienced extension builder ready to quote for your work. HUGHES BUILDERS is the best extension builder in W14. No obligation free quotes and man...
Need to find an Extension Builder near you for all your extension buildering work?
Heaven Sent Construction provides a local, trusted exten...
H G Builders is an established and experienced local extension builder in W14. Please contact us for a free, no obligation quote and competitive ra...
Graham Construction is an established extension buildering business in W14. We come highly recommended and provide competitive quotes for your work...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Phormwork are here to help customers who need an Extension Builder in W14. We offer a competitive rate to complete all your extension buildering jo...

A flat roof extension ranges from the cheapest of £22,024 (HUGHES BUILDERS based in W12) to the dearest of £22,600 (H G Builders based in SW6), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in W14 by posting a job with HaMuch. We'll send it to extension builders in W14.
"Flat roof extension for a period mews terraced house. We'd like a bedroom extension with full bathroom and a roof top terrace. Footprint is roughly 8.5m x 6m." - W6, job posted 10/06/24
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 - £17,796

Two storey extension - £88,444

Build a timber frame extension - £26,296

Build a swimming pool - £81,296

Single storey extension - £60,920

Side return extension - £44,830

Install an RSJ - £2,496

Outbuilding - £10,296

Build a Mansard loft conversion - £52,296

Loft conversion - £36,525

Build a kitchen extension - £42,296

Hip to gable loft conversion - £42,296

Granny annexe - £87,296

Garden office - £10,296

Convert a Garage - £16,296

Garage - £18,796

Build a flat roof extension - £22,296

Build a dormer loft conversion - £42,296

Concrete foundations - £6,546

Convert a bungalow loft - £29,296

Convert a basement - £40,830