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Bristol Building Co.Ltd is an established and experienced local extension builder in Keynsham. Please contact us for a free, no obligation quote an...
J GREEN PLASTERING LTD are here to help customers who need an Extension Builder in Keynsham. We offer a competitive rate to complete all your exten...
Simon Hill
Relax... you have found a reliable extension builder in Keynsham. MSH Construction (Bristol) Ltd is a friendly and reliable company based in Keynsh...
Smart Building Works are here to help customers who need an Extension Builder in Keynsham. We offer a competitive rate to complete all your extensi...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in Keynsham. Experienced in all extension buildering work and keeping within budget and on quote. KDS Bu...
Sarah Godwin
24 7 BUILDING SOLUTIONS LTD is a trusted extension builder serving customers in Keynsham and the surrounding area. Contact us to today to get a com...
Symmetry Design And Build is a trusted extension builder serving customers in Keynsham and the surrounding area. Contact us to today to get a compe...
Trusted and professional extension builder in Keynsham. Experienced in all extension buildering work and keeping within budget and on quote. Cullim...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £21,776 (MSH Construction (Bristol) Ltd based in BS4) to the dearest of £22,256 (Symmetry Design And Build based in BS3), 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 Keynsham by posting a job with HaMuch. We'll send it to extension builders in Keynsham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Keynsham | £33 | £251 |
| Build A Flat Roof Extension near Kingswood | £34 | £257 |
| Build A Flat Roof Extension near Bristol | £33 | £255 |
| Build A Flat Roof Extension near Bath | £32 | £249 |
| Build A Flat Roof Extension near Clifton | £33 | £255 |
| Build A Flat Roof Extension near South Gloucestershire | £34 | £260 |
| Build A Flat Roof Extension near Yate | £34 | £263 |
| Build A Flat Roof Extension near Bradley Stoke | £34 | £259 |
| Build A Flat Roof Extension near Portishead | £33 | £247 |
| Build A Flat Roof Extension near North Somerset | £32 | £245 |
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 - £17,586

Two storey extension - £88,130

Build a timber frame extension - £26,086

Build a swimming pool - £81,086

Single storey extension - £56,728

Side return extension - £42,472

Install an RSJ - £2,286

Outbuilding - £10,086

Build a Mansard loft conversion - £52,086

Loft conversion - £34,560

Build a kitchen extension - £42,086

Hip to gable loft conversion - £42,086

Granny annexe - £87,086

Garden office - £10,086

Convert a Garage - £16,086

Garage - £18,586

Build a flat roof extension - £22,086

Build a dormer loft conversion - £42,086

Concrete foundations - £6,336

Convert a bungalow loft - £29,086

Convert a basement - £38,472