J & N Contracts Cambs Ltd is an established and experienced local extension builder in CB23. Please contact us for a free, no obligation quote and ...
Mickey Woolfe
Need to find an Extension Builder near you for all your extension buildering work?
M Woolfe Builders & Carpenters provides a local, trusted...
From £22,272
Trusted and professional extension builder in CB23. Experienced in all extension buildering work and keeping within budget and on quote. IJC Buildi...

A flat roof extension ranges from the cheapest of £22,208 (M Woolfe Builders & Carpenters based in CB23) to the dearest of £22,800 (J & N Contracts Cambs Ltd based in CB23), 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 CB23 by posting a job with HaMuch. We'll send it to extension builders in CB23.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near South Cambridgeshire | £50 | £315 |
| Build A Flat Roof Extension near Cambridge | £41 | £275 |
| Build A Flat Roof Extension near St Neots | £51 | £318 |
| Build A Flat Roof Extension near Huntingdon | £38 | £284 |
| Build A Flat Roof Extension near Biggleswade | £41 | £268 |
| Build A Flat Roof Extension near Huntingdonshire | £36 | £290 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
| Build A Flat Roof Extension near Letchworth | £44 | £283 |
| Build A Flat Roof Extension near North Hertfordshire | £44 | £283 |
| Build A Flat Roof Extension near South Bedfordshire | £45 | £278 |
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 - £17,927

Two storey extension - £88,640

Build a timber frame extension - £26,427

Build a swimming pool - £81,427

Single storey extension - £63,533

Side return extension - £46,300

Install an RSJ - £2,627

Outbuilding - £10,427

Build a Mansard loft conversion - £52,427

Loft conversion - £37,750

Build a kitchen extension - £42,427

Hip to gable loft conversion - £42,427

Granny annexe - £87,427

Garden office - £10,427

Convert a Garage - £16,427

Garage - £18,927

Build a flat roof extension - £22,427

Build a dormer loft conversion - £42,427

Concrete foundations - £6,677

Convert a bungalow loft - £29,427

Convert a basement - £42,300