From £22,160
B C Construction is an established and experienced local extension builder in TN8. Please contact us for a free, no obligation quote and competitiv...
From £22,288
Our services include new build construction, extensions, basements, renovations and residential developments. We undertake projects ranging from 10...
From £22,016
Relax... you have found a reliable extension builder in TN8. JESMOR CONSTRUCTION LTD is a friendly and reliable company based in TN8 who consider n...
From £22,320
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £21,728
Apsley Wall Ltd is an established extension buildering business in TN8. We come highly recommended and provide competitive quotes for your work.
From £21,608
We are a building and landscaping business, based in Oxted, Surrey. We cover all surrounding areas, such as Limpsfield, Woldingham, Warlingham, Wes...
From £22,368
Relax... you have found a reliable extension builder in TN8. WMT Building Services Ltd is a friendly and reliable company based in TN8 who consider...
From £22,552
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,264
Our building services company Accuracy Developments Ltd has over 25 years’ experience. We have been helping customers in Westerham and the surrou...
From £21,888
Relax... you have found a reliable extension builder in TN8. A C Ribbens Building & Decorating is a friendly and reliable company based in TN8 who ...

A flat roof extension ranges from the cheapest of £21,608 (CAMERON BUILDING AND LANDSCAPING SERVICES LTD based in rh8) to the dearest of £22,552 (Asprey Homes Ltd based in TN16), 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 TN8 by posting a job with HaMuch. We'll send it to extension builders in TN8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near East Grinstead | £37 | £259 |
| Build A Flat Roof Extension near Sevenoaks | £38 | £234 |
| Build A Flat Roof Extension near Tonbridge | £38 | £254 |
| Build A Flat Roof Extension near Tunbridge Wells | £37 | £258 |
| Build A Flat Roof Extension near Caterham | £43 | £272 |
| Build A Flat Roof Extension near Horley | £38 | £258 |
| Build A Flat Roof Extension near Crowborough | £36 | £258 |
| Build A Flat Roof Extension near Redhill | £41 | £269 |
| Build A Flat Roof Extension near Crawley | £38 | £255 |
| Build A Flat Roof Extension near Reigate | £40 | £270 |
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 - £17,619

Two storey extension - £88,179

Build a timber frame extension - £26,119

Build a swimming pool - £81,119

Single storey extension - £57,384

Side return extension - £42,841

Install an RSJ - £2,319

Outbuilding - £10,119

Build a Mansard loft conversion - £52,119

Loft conversion - £34,868

Build a kitchen extension - £42,119

Hip to gable loft conversion - £42,119

Granny annexe - £87,119

Garden office - £10,119

Convert a Garage - £16,119

Garage - £18,619

Build a flat roof extension - £22,119

Build a dormer loft conversion - £42,119

Concrete foundations - £6,369

Convert a bungalow loft - £29,119

Convert a basement - £38,841