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Lee Townsend
Need to find an Extension Builder near you for all your extension buildering work?
Lp Townsend Brickwork provides a local, trusted extensio...
B.A Ruffle Building Contractor is an established extension buildering business in Windsor & Maidenhead. We come highly recommended and provide comp...
From 2007 – 2015 David Rudelhoff (Founder and Director) was the Property Manager for a high profile, high net worth family. During that time, in ...
Experienced extension builder ready to quote for your work. A L King Services is the best extension builder in Windsor & Maidenhead. No obligation ...
ASAP Roofing & Exterior Maintenance is a trusted extension builder serving customers in Windsor & Maidenhead and the surrounding area. Contact us t...
Experienced extension builder ready to quote for your work. A South View is the best extension builder in Windsor & Maidenhead. No obligation free ...
Ani Mokashi is an established and experienced local extension builder in Windsor & Maidenhead. Please contact us for a free, no obligation quote an...
Experienced extension builder ready to quote for your work. NICE BUILD is the best extension builder in Windsor & Maidenhead. No obligation free qu...
Lead by designer Richard Gordon, GDC is a London and Berkshire based Design & Build firm with a vast amount of experience in both the residential a...
Dub Solutions is a trusted extension builder serving customers in Windsor & Maidenhead and the surrounding area. Contact us to today to get a compe...

A flat roof extension ranges from the cheapest of £21,920 (Lp Townsend Brickwork based in SL2) to the dearest of £22,472 (ASAP Roofing & Exterior Maintenance based in SL5), 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 Windsor & Maidenhead by posting a job with HaMuch. We'll send it to extension builders in Windsor & Maidenhead.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Windsor & Maidenhead | £42 | £272 |
| Build A Flat Roof Extension near Windsor | £41 | £271 |
| Build A Flat Roof Extension near Slough | £42 | £272 |
| Build A Flat Roof Extension near Egham | £42 | £266 |
| Build A Flat Roof Extension near Staines-upon-Thames | £42 | £269 |
| Build A Flat Roof Extension near Maidenhead | £41 | £273 |
| Build A Flat Roof Extension near Ascot | £41 | £276 |
| Build A Flat Roof Extension near Bracknell Forest | £40 | £270 |
| Build A Flat Roof Extension near Bracknell | £40 | £269 |
| Build A Flat Roof Extension near Hillingdon | £43 | £276 |
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 - £17,689

Two storey extension - £88,283

Build a timber frame extension - £26,189

Build a swimming pool - £81,189

Single storey extension - £58,776

Side return extension - £43,624

Install an RSJ - £2,389

Outbuilding - £10,189

Build a Mansard loft conversion - £52,189

Loft conversion - £35,520

Build a kitchen extension - £42,189

Hip to gable loft conversion - £42,189

Granny annexe - £87,189

Garden office - £10,189

Convert a Garage - £16,189

Garage - £18,689

Build a flat roof extension - £22,189

Build a dormer loft conversion - £42,189

Concrete foundations - £6,439

Convert a bungalow loft - £29,189

Convert a basement - £39,624