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Arthur Cooper
Experienced extension builder ready to quote for your work. J Cooper Roofing is the best extension builder in Sevenoaks. No obligation free quotes ...
BENCHMARK BUILDING & is a trusted extension builder serving customers in Sevenoaks and the surrounding area. Contact us to today to get a competiti...
Relax... you have found a reliable extension builder in Sevenoaks. UNIVERSAL CONSTRUCTION is a friendly and reliable company based in Sevenoaks who...
Tony Wickham
Trusted and professional extension builder in Sevenoaks. Experienced in all extension buildering work and keeping within budget and on quote. T WIC...
B C Construction is an established and experienced local extension builder in Sevenoaks. Please contact us for a free, no obligation quote and comp...
Sevenoaks, TN13
Experienced extension builder ready to quote for your work. PPC CONSTRUCTION is the best extension builder in Sevenoaks. No obligation free quotes ...
Need to find an Extension Builder near you for all your extension buildering work?
Egidos Limited provides a local, trusted extension build...
Relax... you have found a reliable extension builder in Sevenoaks. A C Ribbens Building & Decorating is a friendly and reliable company based in Se...
Altin Kodra
Our building services company AL-KO Renovations was established over 12 years ago. Since then we have been helping customers in the area by providi...
Trusted and professional extension builder in Sevenoaks. Experienced in all extension buildering work and keeping within budget and on quote. ORBIT...

A flat roof extension ranges from the cheapest of £21,888 (A C Ribbens Building & Decorating based in TN16) to the dearest of £22,528 (AL-KO Construction Ltd based in BR5), 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 Sevenoaks by posting a job with HaMuch. We'll send it to extension builders in Sevenoaks.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| 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 Larkfield | £41 | £253 |
| Build A Flat Roof Extension near Bexley | £42 | £265 |
| Build A Flat Roof Extension near Caterham | £43 | £271 |
| Build A Flat Roof Extension near Bromley | £43 | £268 |
| Build A Flat Roof Extension near Dartford | £41 | £265 |
| Build A Flat Roof Extension near Northfleet | £41 | £261 |
| Build A Flat Roof Extension near Croydon | £42 | £267 |
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 - £17,625

Two storey extension - £88,187

Build a timber frame extension - £26,125

Build a swimming pool - £81,125

Single storey extension - £57,496

Side return extension - £42,904

Install an RSJ - £2,325

Outbuilding - £10,125

Build a Mansard loft conversion - £52,125

Loft conversion - £34,920

Build a kitchen extension - £42,125

Hip to gable loft conversion - £42,125

Granny annexe - £87,125

Garden office - £10,125

Convert a Garage - £16,125

Garage - £18,625

Build a flat roof extension - £22,125

Build a dormer loft conversion - £42,125

Concrete foundations - £6,375

Convert a bungalow loft - £29,125

Convert a basement - £38,904