Mickey Woolfe
Need to find an Extension Builder near you for all your extension buildering work?
M Woolfe Builders & Carpenters provides a local, trusted...
Inspire Carpentry and Construction Ltd is an established and experienced local extension builder in CB3. Please contact us for a free, no obligatio...
Silverwood Construction (Cambridge) Ltd are here to help customers who need an Extension Builder in CB3. We offer a competitive rate to complete al...
Relax... you have found a reliable extension builder in CB3. CROWNBUILD is a friendly and reliable company based in CB3 who consider no job as too ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. ALLIED BUILDING ASSOCIATES LTD is the best extension builder in CB3. No obligation free...
Ireneusz Pawelek
Eric Handyman- builder is an established and experienced local extension builder in CB3. Please contact us for a free, no obligation quote and comp...
Need an Extension Builder in CB3? WILLMOTT DIXON CONSTRUCTION LI has been helping local clients (20 mile radius) with their extension buildering jo...
Richard Groom
Relax... you have found a reliable extension builder in CB3. R G BUILDERS is a friendly and reliable company based in CB3 who consider no job as to...

A flat roof extension ranges from the cheapest of £21,920 (Inspire Carpentry and Construction Ltd based in CB24) 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 CB3 by posting a job with HaMuch. We'll send it to extension builders in CB3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Cambridge | £38 | £271 |
| Build A Flat Roof Extension near South Cambridgeshire | £43 | £305 |
| Build A Flat Roof Extension near Huntingdon | £38 | £284 |
| Build A Flat Roof Extension near St Neots | £51 | £318 |
| Build A Flat Roof Extension near Biggleswade | £41 | £268 |
| Build A Flat Roof Extension near Ely | £40 | £279 |
| Build A Flat Roof Extension near Huntingdonshire | £36 | £290 |
| Build A Flat Roof Extension near Letchworth | £44 | £283 |
| Build A Flat Roof Extension near Haverhill | £37 | £260 |
| Build A Flat Roof Extension near North Hertfordshire | £44 | £283 |
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 - £17,800

Two storey extension - £88,450

Build a timber frame extension - £26,300

Build a swimming pool - £81,300

Single storey extension - £61,000

Side return extension - £44,875

Install an RSJ - £2,500

Outbuilding - £10,300

Build a Mansard loft conversion - £52,300

Loft conversion - £36,563

Build a kitchen extension - £42,300

Hip to gable loft conversion - £42,300

Granny annexe - £87,300

Garden office - £10,300

Convert a Garage - £16,300

Garage - £18,800

Build a flat roof extension - £22,300

Build a dormer loft conversion - £42,300

Concrete foundations - £6,550

Convert a bungalow loft - £29,300

Convert a basement - £40,875