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Relax... you have found a reliable extension builder in Redhill. D & R Roofing & Loft Conversions, Building & Design is a friendly and reliable com...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
DPP Construction (David Price Partnership) provides a lo...
Trusted and professional extension builder in Redhill. Experienced in all extension buildering work and keeping within budget and on quote. D B Jon...
ALBANA PERANA
The Reigate Marble Shop LTD.
Established in 2005, The Reigate Marble Shop...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
S C H BUILDING SERVICES provides a local, trusted extens...
Crawley Construction Ltd
Contact us: 07454160840 Email: enquiries@ We are a family run business since 15 year’s+. We are build on tru...
J S Nisbet Loft Conversions are here to help customers who need an Extension Builder in Redhill. We offer a competitive rate to complete all your e...

A flat roof extension ranges from the cheapest of £21,792 (REIGATE MARBLE SHOP based in RH2) to the dearest of £22,328 (J Stevens Roofing & Guttering based in KT18), 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 Redhill by posting a job with HaMuch. We'll send it to extension builders in Redhill.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Redhill | £41 | £269 |
| Build A Flat Roof Extension near Reigate | £40 | £270 |
| Build A Flat Roof Extension near Reigate & Banstead | £41 | £271 |
| Build A Flat Roof Extension near Tadworth | £41 | £271 |
| Build A Flat Roof Extension near Horley | £38 | £258 |
| Build A Flat Roof Extension near Caterham | £43 | £271 |
| Build A Flat Roof Extension near Epsom | £44 | £275 |
| Build A Flat Roof Extension near Crawley | £38 | £255 |
| Build A Flat Roof Extension near Ewell | £44 | £275 |
| Build A Flat Roof Extension near Sutton | £43 | £274 |
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 - £17,562

Two storey extension - £88,094

Build a timber frame extension - £26,062

Build a swimming pool - £81,062

Single storey extension - £56,248

Side return extension - £42,202

Install an RSJ - £2,262

Outbuilding - £10,062

Build a Mansard loft conversion - £52,062

Loft conversion - £34,335

Build a kitchen extension - £42,062

Hip to gable loft conversion - £42,062

Granny annexe - £87,062

Garden office - £10,062

Convert a Garage - £16,062

Garage - £18,562

Build a flat roof extension - £22,062

Build a dormer loft conversion - £42,062

Concrete foundations - £6,312

Convert a bungalow loft - £29,062

Convert a basement - £38,202