JDS Building Services is an established extension buildering business in CO7. We come highly recommended and provide competitive quotes for your wo...
T F Builders are here to help customers who need an Extension Builder in CO7. We offer a competitive rate to complete all your extension buildering...
Trusted and professional extension builder in CO7. Experienced in all extension buildering work and keeping within budget and on quote. CHAPEL BUIL...
From £2,040
Adam
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 £1,904
John O Connell Building Solutions is an established extension buildering business in CO7. We come highly recommended and provide competitive quotes...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CO7 it ranges from £1,808 (JDS Building Services based in CO7) to £2,040 (Open Plan Renovation based in CO4).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in CO7 by posting a job with HaMuch and we will send it to extension builders in CO7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Tendring | £31 | £226 |
| Install An RSJ near Colchester | £34 | £232 |
| Install An RSJ near Clacton-on-Sea | £31 | £230 |
| Install An RSJ near Harwich | £34 | £248 |
| Install An RSJ near Ipswich | £33 | £235 |
| Install An RSJ near Felixstowe | £31 | £231 |
| Install An RSJ near Maldon | £36 | £244 |
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Braintree | £37 | £247 |
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 - £17,191

Two storey extension - £87,537

Build a timber frame extension - £25,691

Build a swimming pool - £80,691

Single storey extension - £48,824

Side return extension - £38,026

Install an RSJ - £1,891

Outbuilding - £9,691

Build a Mansard loft conversion - £51,691

Loft conversion - £30,855

Build a kitchen extension - £41,691

Hip to gable loft conversion - £41,691

Granny annexe - £86,691

Garden office - £9,691

Convert a Garage - £15,691

Garage - £18,191

Build a flat roof extension - £21,691

Build a dormer loft conversion - £41,691

Concrete foundations - £5,941

Convert a bungalow loft - £28,691

Convert a basement - £34,026