Need to find an Extension Builder near you for all your extension buildering work?
S C H BUILDING SERVICES provides a local, trusted extens...
Need to find an Extension Builder near you for all your extension buildering work?
V & B FACILITIES & BUILDING provides a local, trusted ex...
Ali Kasko
Need an Extension Builder in RH9? Ak Construction kasko group ltd has been helping local clients (10 mile radius) with their extension buildering ...
From £21,608
James Cameron
We are a building and landscaping business, based in Oxted, Surrey. We cover all surrounding areas, such as Limpsfield, Woldingham, Warlingham, Wes...
From £22,384
Lands Building is an established extension buildering business in RH9. We come highly recommended and provide competitive quotes for your work.
...From £22,104
Linea Home Design Ltd is an established and experienced local extension builder in RH9. Please contact us for a free, no obligation quote and compe...
From £22,408
Linea Home Design LTD is a Surrey based company with extensive knowledge and experience in design and refurbishments. Specialising in bathrooms, we...
From £22,368
Relax... you have found a reliable extension builder in RH9. WMT Building Services Ltd is a friendly and reliable company based in RH9 who consider...
From £22,344
Urban Space Projects is a trusted extension builder serving customers in RH9 and the surrounding area. Contact us to today to get a competitive quo...
From £22,256
Need to find an Extension Builder near you for all your extension buildering work?
Collier Roofing provides a local, trusted extension buil...

A flat roof extension ranges from the cheapest of £21,608 (CAMERON BUILDING AND LANDSCAPING SERVICES LTD based in rh8) to the dearest of £22,408 (Linea Home Design Ltd based in CR3), 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 RH9 by posting a job with HaMuch. We'll send it to extension builders in RH9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Caterham | £43 | £271 |
| Build A Flat Roof Extension near Redhill | £41 | £269 |
| Build A Flat Roof Extension near Reigate | £40 | £270 |
| Build A Flat Roof Extension near Horley | £38 | £258 |
| 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 East Grinstead | £37 | £259 |
| Build A Flat Roof Extension near Crawley | £38 | £255 |
| Build A Flat Roof Extension near Croydon | £42 | £267 |
| Build A Flat Roof Extension near Epsom | £44 | £275 |
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 - £17,710

Two storey extension - £88,316

Build a timber frame extension - £26,210

Build a swimming pool - £81,210

Single storey extension - £59,208

Side return extension - £43,867

Install an RSJ - £2,410

Outbuilding - £10,210

Build a Mansard loft conversion - £52,210

Loft conversion - £35,723

Build a kitchen extension - £42,210

Hip to gable loft conversion - £42,210

Granny annexe - £87,210

Garden office - £10,210

Convert a Garage - £16,210

Garage - £18,710

Build a flat roof extension - £22,210

Build a dormer loft conversion - £42,210

Concrete foundations - £6,460

Convert a bungalow loft - £29,210

Convert a basement - £39,867