From £21,624
T F Builders are here to help customers who need an Extension Builder in CO2. We offer a competitive rate to complete all your extension buildering...
From £22,000
Need an Extension Builder in CO2? VICTOR COLIN PRESTON has been helping local clients (20 mile radius) with their extension buildering jobs for man...
From £21,488
I am a small builder having been in the industry for fourty years I carry out work to a very good standard at reasonable prices I have plenty of cu...
From £21,840
D R Rouse Build Limited is a trusted extension builder serving customers in CO2 and the surrounding area. Contact us to today to get a competitive ...
From £21,768
Complete Building Solutions is an established and experienced local extension builder in CO2. Please contact us for a free, no obligation quote and...
From £21,840
Having been established for over 10 years, we have accumulated a vast amount of local experience in all aspects of domestic renovation projects.We ...
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 £21,608
JDS Building Services is an established extension buildering business in CO2. We come highly recommended and provide competitive quotes for your wo...
From £22,008
HUTTON CONSTRUCTION LTD is a trusted extension builder serving customers in CO2 and the surrounding area. Contact us to today to get a competitive ...
From £21,864
Experienced extension builder ready to quote for your work. MATURECOURT BUILDERS LTD is the best extension builder in CO2. No obligation free quote...

A flat roof extension ranges from the cheapest of £21,336 (Ace Locksmith based in CO3) to the dearest of £22,008 (HUTTON CONSTRUCTION LTD based in CO2), 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 CO2 by posting a job with HaMuch. We'll send it to extension builders in CO2.
| 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 Clacton-on-Sea | £31 | £230 |
| Build A Flat Roof Extension near Braintree | £37 | £247 |
| Build A Flat Roof Extension near Sudbury | £34 | £229 |
| Build A Flat Roof Extension near Harwich | £34 | £248 |
| Build A Flat Roof Extension near Ipswich | £33 | £235 |
| Build A Flat Roof Extension near Felixstowe | £31 | £231 |
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 - £17,238

Two storey extension - £87,606

Build a timber frame extension - £25,738

Build a swimming pool - £80,738

Single storey extension - £49,752

Side return extension - £38,548

Install an RSJ - £1,938

Outbuilding - £9,738

Build a Mansard loft conversion - £51,738

Loft conversion - £31,290

Build a kitchen extension - £41,738

Hip to gable loft conversion - £41,738

Granny annexe - £86,738

Garden office - £9,738

Convert a Garage - £15,738

Garage - £18,238

Build a flat roof extension - £21,738

Build a dormer loft conversion - £41,738

Concrete foundations - £5,988

Convert a bungalow loft - £28,738

Convert a basement - £34,548