From £1,968
Complete Building Solutions is an established and experienced local extension builder in Colchester. Please contact us for a free, no obligation qu...
From £2,040
Colchester, CO1
D R Rouse Build Limited is a trusted extension builder serving customers in Colchester and the surrounding area. Contact us to today to get a compe...
From £1,824
Colchester, CO2
T F Builders are here to help customers who need an Extension Builder in Colchester. We offer a competitive rate to complete all your extension bui...
From £2,040
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 £2,064
Experienced extension builder ready to quote for your work. MATURECOURT BUILDERS LTD is the best extension builder in Colchester. No obligation fre...
From £2,200
Colchester, CO2
Need an Extension Builder in Colchester? VICTOR COLIN PRESTON has been helping local clients (20 mile radius) with their extension buildering jobs ...
From £1,536
Colchester, CO3
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 £1,688
Colchester, CO2
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 £2,288
Colchester, CO3
R Best Building Services are here to help customers who need an Extension Builder in Colchester. We offer a competitive rate to complete all your e...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Colchester it ranges from £1,536 (Ace Locksmith based in CO3) to £2,288 (R Best Building Services based in CO3).
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 Colchester by posting a job with HaMuch and we will send it to extension builders in Colchester.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Colchester | £33 | £230 |
| Install An RSJ near Tendring | £31 | £226 |
| Install An RSJ near Witham | £36 | £240 |
| Install An RSJ near Clacton-on-Sea | £31 | £230 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Maldon | £36 | £244 |
| Install An RSJ near Braintree | £37 | £247 |
| Install An RSJ near Ipswich | £33 | £235 |
| Install An RSJ near Harwich | £34 | £248 |
| Install An RSJ 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 - £17,233

Two storey extension - £87,599

Build a timber frame extension - £25,733

Build a swimming pool - £80,733

Single storey extension - £49,656

Side return extension - £38,494

Install an RSJ - £1,933

Outbuilding - £9,733

Build a Mansard loft conversion - £51,733

Loft conversion - £31,245

Build a kitchen extension - £41,733

Hip to gable loft conversion - £41,733

Granny annexe - £86,733

Garden office - £9,733

Convert a Garage - £15,733

Garage - £18,233

Build a flat roof extension - £21,733

Build a dormer loft conversion - £41,733

Concrete foundations - £5,983

Convert a bungalow loft - £28,733

Convert a basement - £34,494