From £22,464
With over 35 years experience our reputation is built around the service we provide which is why we have a high percentage of repeat business and t...
From £21,976
Need to find an Extension Builder near you for all your extension buildering work?
GEEVES BUILD LTD provides a local, trusted extension bui...
From £22,520
Hi my names Lewis in a trusted roofer, I’m a member of which trusted trader and Checkatrade member. I do all types of roof flat roofs, guttering,...
From £22,456
Infinity’s founder has international property development expertise, having undertaken traditional and contemporary projects spanning the UK, Ire...
From £21,984
Experienced extension builder ready to quote for your work. Capital Building & Maintenance is the best extension builder in CM6. No obligation free...
From £22,456
MDH Construction is an established and experienced local extension builder in CM6. Please contact us for a free, no obligation quote and competitiv...
From £22,208
Trusted and professional extension builder in CM6. Experienced in all extension buildering work and keeping within budget and on quote. 1st Look Ro...
From £21,920
Relax... you have found a reliable extension builder in CM6. C P R CONSTRUCTION LTD is a friendly and reliable company based in CM6 who consider no...
From £21,912
Right Renovations Limited are here to help customers who need an Extension Builder in CM6. We offer a competitive rate to complete all your extensi...
From £21,760
Trusted and professional extension builder in CM6. Experienced in all extension buildering work and keeping within budget and on quote. A T HOOKWAY...

A flat roof extension ranges from the cheapest of £21,760 (A T HOOKWAY (BUILDERS) based in CM3) to the dearest of £22,520 (1st Look Roofing based in CM6), 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 CM6 by posting a job with HaMuch. We'll send it to extension builders in CM6.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Bishop's Stortford | £42 | £264 |
| Build A Flat Roof Extension near Braintree | £37 | £247 |
| Build A Flat Roof Extension near Chelmsford | £38 | £258 |
| Build A Flat Roof Extension near Harlow | £43 | £288 |
| Build A Flat Roof Extension near Witham | £36 | £240 |
| Build A Flat Roof Extension near Haverhill | £37 | £260 |
| Build A Flat Roof Extension near Ware | £47 | £296 |
| Build A Flat Roof Extension near Maldon | £36 | £244 |
| Build A Flat Roof Extension near East Hertfordshire | £44 | £289 |
| Build A Flat Roof Extension near Hoddesdon | £46 | £296 |
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 - £17,666

Two storey extension - £88,248

Build a timber frame extension - £26,166

Build a swimming pool - £81,166

Single storey extension - £58,312

Side return extension - £43,363

Install an RSJ - £2,366

Outbuilding - £10,166

Build a Mansard loft conversion - £52,166

Loft conversion - £35,303

Build a kitchen extension - £42,166

Hip to gable loft conversion - £42,166

Granny annexe - £87,166

Garden office - £10,166

Convert a Garage - £16,166

Garage - £18,666

Build a flat roof extension - £22,166

Build a dormer loft conversion - £42,166

Concrete foundations - £6,416

Convert a bungalow loft - £29,166

Convert a basement - £39,363