From £22,000
Need an Extension Builder in CO3? VICTOR COLIN PRESTON has been helping local clients (20 mile radius) with their extension buildering jobs for man...
From £21,336
I have been a locksmith for 18 years now and I started in the building trade when I was 14.
Contact me for help with building services.
From £21,768
Complete Building Solutions is an established and experienced local extension builder in CO3. Please contact us for a free, no obligation quote and...
From £21,864
Experienced extension builder ready to quote for your work. MATURECOURT BUILDERS LTD is the best extension builder in CO3. No obligation free quote...
From £21,840
D R Rouse Build Limited is a trusted extension builder serving customers in CO3 and the surrounding area. Contact us to today to get a competitive ...
From £21,624
T F Builders are here to help customers who need an Extension Builder in CO3. We offer a competitive rate to complete all your extension buildering...
From £22,088
R Best Building Services are here to help customers who need an Extension Builder in CO3. We offer a competitive rate to complete all your extensio...
From £22,008
HUTTON CONSTRUCTION LTD is a trusted extension builder serving customers in CO3 and the surrounding area. Contact us to today to get a competitive ...
From £21,976
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

A flat roof extension ranges from the cheapest of £21,336 (Ace Locksmith based in CO3) to the dearest of £22,088 (R Best Building Services based in CO3), 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 CO3 by posting a job with HaMuch. We'll send it to extension builders in CO3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Build A Flat Roof Extension near Colchester | £33 | £230 |
| Build A Flat Roof Extension near Tendring | £31 | £226 |
| Build A Flat Roof Extension near Witham | £36 | £240 |
| Build A Flat Roof Extension near Maldon | £36 | £244 |
| Build A Flat Roof Extension near Sudbury | £34 | £229 |
| Build A Flat Roof Extension near Braintree | £37 | £247 |
| Build A Flat Roof Extension near Clacton-on-Sea | £31 | £232 |
| Build A Flat Roof Extension near Harwich | £34 | £248 |
| Build A Flat Roof Extension near Ipswich | £33 | £235 |
| Build A Flat Roof Extension near Chelmsford | £38 | £258 |
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 - £17,298

Two storey extension - £87,698

Build a timber frame extension - £25,798

Build a swimming pool - £80,798

Single storey extension - £50,968

Side return extension - £39,232

Install an RSJ - £1,998

Outbuilding - £9,798

Build a Mansard loft conversion - £51,798

Loft conversion - £31,860

Build a kitchen extension - £41,798

Hip to gable loft conversion - £41,798

Granny annexe - £86,798

Garden office - £9,798

Convert a Garage - £15,798

Garage - £18,298

Build a flat roof extension - £21,798

Build a dormer loft conversion - £41,798

Concrete foundations - £6,048

Convert a bungalow loft - £28,798

Convert a basement - £35,232