From £22,304
Relax... you have found a reliable extension builder in SG8. Refresh Renovations - Cambridgeshire - Simon is a friendly and reliable company based ...
From £22,464
Trusted and professional extension builder in SG8. Experienced in all extension buildering work and keeping within budget and on quote. Rescapes Co...
From £22,072
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £22,216
M OLIVER BUILDING is an established and experienced local extension builder in SG8. Please contact us for a free, no obligation quote and competiti...
From £22,384
Comprehensive, Intelligent Construction Service offering Domestic and Commercial Buildings, Barn, Basement and Loft Conversions, Renovation & Refur...
From £23,360
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in SG8. No obligation free...
From £22,456
Steve Rolt Home Improvements Ltd was founded in 2016 in Buntingford, Hertfordshire, and from small beginnings, has gone from stren...
From £22,080
Essex Roofing Ltd is an established and experienced local extension builder in SG8. Please contact us for a free, no obligation quote and competiti...
From £22,136
O G Conversions is an established and experienced local extension builder in SG8. Please contact us for a free, no obligation quote and competitive...
From £22,216
Trusted and professional extension builder in SG8. Experienced in all extension buildering work and keeping within budget and on quote. DEBRAY BUIL...

A flat roof extension ranges from the cheapest of £22,072 (ECO DESIGN & BUILD (UK) LTD based in SG8) to the dearest of £23,360 (ALLIED BUILDING ASSOCIATES LTD based in CB22), 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 SG8 by posting a job with HaMuch. We'll send it to extension builders in SG8.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near South Cambridgeshire | £43 | £305 |
| Build A Flat Roof Extension near Letchworth | £44 | £283 |
| Build A Flat Roof Extension near Biggleswade | £41 | £268 |
| Build A Flat Roof Extension near North Hertfordshire | £44 | £283 |
| Build A Flat Roof Extension near Cambridge | £38 | £271 |
| Build A Flat Roof Extension near East Hertfordshire | £44 | £289 |
| Build A Flat Roof Extension near Stevenage | £44 | £282 |
| Build A Flat Roof Extension near Hitchin | £43 | £283 |
| Build A Flat Roof Extension near St Neots | £51 | £318 |
| Build A Flat Roof Extension near Bishop's Stortford | £42 | £264 |
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 - £17,869

Two storey extension - £88,553

Build a timber frame extension - £26,369

Build a swimming pool - £81,369

Single storey extension - £62,376

Side return extension - £45,649

Install an RSJ - £2,569

Outbuilding - £10,369

Build a Mansard loft conversion - £52,369

Loft conversion - £37,208

Build a kitchen extension - £42,369

Hip to gable loft conversion - £42,369

Granny annexe - £87,369

Garden office - £10,369

Convert a Garage - £16,369

Garage - £18,869

Build a flat roof extension - £22,369

Build a dormer loft conversion - £42,369

Concrete foundations - £6,619

Convert a bungalow loft - £29,369

Convert a basement - £41,649