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Select your affordable TW11 extension builder
Trusted and professional extension builder in TW11. Experienced in all extension buildering work and keeping within budget and on quote. TFC Constr...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Power Bespoke Building Limited is an established extension buildering business in TW11. We come highly recommended and provide competitive quotes f...
Need to find an Extension Builder near you for all your extension buildering work?
D GAFFNEY D G BUILDERS & CO provides a local, trusted ex...
From £52,352
SURREY BUILDING SOLUTIONS are here to help customers who need an Extension Builder in TW11. We offer a competitive rate to complete all your extens...
From £51,904
Masterbuild & Design Ltd is an established and experienced local extension builder in TW11. Please contact us for a free, no obligation quote and c...
From £51,896
Need to find an Extension Builder near you for all your extension buildering work?
Professional Roofing & Guttering Services provides a loc...
From £52,144
Need to find an Extension Builder near you for all your extension buildering work?
Sterling Building Contracts Li provides a local, trusted...
From £51,976
Trusted and professional extension builder in TW11. Experienced in all extension buildering work and keeping within budget and on quote. Blue Ribbo...
From £52,328
Need an Extension Builder in TW11? ADAMSKI CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering jobs fo...

Mansard loft conversions range from the cheapest installation of £51,896 (Tota Builders based in TW2) to the dearest of around £52,448 (Power Bespoke Building Limited based in TW12).
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 TW11 by posting a job with HaMuch and we'll send it to extension builders in TW11.
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 - £17,664

Two storey extension - £88,246

Build a timber frame extension - £26,164

Build a swimming pool - £81,164

Single storey extension - £58,280

Side return extension - £43,345

Install an RSJ - £2,364

Outbuilding - £10,164

Build a Mansard loft conversion - £52,164

Loft conversion - £35,288

Build a kitchen extension - £42,164

Hip to gable loft conversion - £42,164

Granny annexe - £87,164

Garden office - £10,164

Convert a Garage - £16,164

Garage - £18,664

Build a flat roof extension - £22,164

Build a dormer loft conversion - £42,164

Concrete foundations - £6,414

Convert a bungalow loft - £29,164

Convert a basement - £39,345