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Jonathan Rimmer
Experienced extension builder ready to quote for your work. Mr is the best extension builder in W9. No obligation free quotes and many happy custom...
V.S.P is a trusted extension builder serving customers in W9 and the surrounding area. Contact us to today to get a competitive quote for extension...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Patrick Gavin
Need an Extension Builder in W9? NWL Renovations Ltd has been helping local clients (5 mile radius) with their extension buildering jobs for many ...
Relax... you have found a reliable extension builder in W9. M & A UK Ltd is a friendly and reliable company based in W9 who consider no job as too ...
Hussein Eljhani
We are highly professional Builders Company, hones pricing and reliable, we leave all areas clean and tidy.
Plum & Bros Loft Ltd is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work...
Graham Construction is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work....
Need to find an Extension Builder near you for all your extension buildering work?
EUROBUILD PROPERTIES CO LTD provides a local, trusted ex...
SDM Services is an established extension buildering business in W9. We come highly recommended and provide competitive quotes for your work.

Concrete foundations range from the £6,154 (V.S.P based in NW10) to £8,154 (Plum & Bros Loft Ltd based in NW6) in W9.
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 W9 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 - £17,863

Two storey extension - £88,545

Build a timber frame extension - £26,363

Build a swimming pool - £81,363

Single storey extension - £62,264

Side return extension - £45,586

Install an RSJ - £2,563

Outbuilding - £10,363

Build a Mansard loft conversion - £52,363

Loft conversion - £37,155

Build a kitchen extension - £42,363

Hip to gable loft conversion - £42,363

Granny annexe - £87,363

Garden office - £10,363

Convert a Garage - £16,363

Garage - £18,863

Build a flat roof extension - £22,363

Build a dormer loft conversion - £42,363

Concrete foundations - £6,613

Convert a bungalow loft - £29,363

Convert a basement - £41,586