From £1,984
We offer a bespoke Design & Build service whereby we can build your perfect home from scratch.• FIND THE PLOT (YOU MAY ALREADY HAVE ONE)• ASSEM...
From £1,968
After 6 years as a member of the Which? Trusted Traders scheme D.A.Elias Builders are proud to receive our latest Certificate, ensuring we...
From £2,048
Need an Extension Builder in IP12? SBC Services (East Anglia) Ltd has been helping local clients (20 mile radius) with their extension buildering j...
From £2,160
BOOTH DESIGN AND BUILD LTD are here to help customers who need an Extension Builder in IP12. We offer a competitive rate to complete all your exten...
From £1,656
Experienced extension builder ready to quote for your work. BFG Suffolk is the best extension builder in IP12. No obligation free quotes and many h...
From £1,888
STOWE BUILDING CONTRACTORS LTD is a trusted extension builder serving customers in IP12 and the surrounding area. Contact us to today to get a comp...
From £1,984
Need to find an Extension Builder near you for all your extension buildering work?
Stowe Building Contractors Ltd provides a local, trusted...
From £1,712
Need to find an Extension Builder near you for all your extension buildering work?
D.J Ruse Builders provides a local, trusted extension bu...
From £1,656
Dmc paving&landscaping we. Family run company with many years experience with over 100 reviews on other websites
From £1,496
Caley & Son are here to help customers who need an Extension Builder in IP12. We offer a competitive rate to complete all your extension buildering...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in IP12 it ranges from £1,496 (Caley & Son based in IP3) to £2,160 (BOOTH DESIGN AND BUILD LTD based in IP12).
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 IP12 by posting a job with HaMuch and we will send it to extension builders in IP12.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Suffolk Coastal | £24 | £190 |
| Install An RSJ near Felixstowe | £27 | £203 |
| Install An RSJ near Ipswich | £28 | £202 |
| Install An RSJ near Harwich | £28 | £207 |
| Install An RSJ near Stowmarket | £28 | £201 |
| Install An RSJ near Tendring | £27 | £195 |
| Install An RSJ near Clacton-on-Sea | £26 | £197 |
| Install An RSJ near Waveney | £22 | £182 |
| Install An RSJ near Colchester | £29 | £200 |
| Install An RSJ near Sudbury | £30 | £208 |
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 - £17,155

Two storey extension - £87,483

Build a timber frame extension - £25,655

Build a swimming pool - £80,655

Single storey extension - £48,104

Side return extension - £37,621

Install an RSJ - £1,855

Outbuilding - £9,655

Build a Mansard loft conversion - £51,655

Loft conversion - £30,518

Build a kitchen extension - £41,655

Hip to gable loft conversion - £41,655

Granny annexe - £86,655

Garden office - £9,655

Convert a Garage - £15,655

Garage - £18,155

Build a flat roof extension - £21,655

Build a dormer loft conversion - £41,655

Concrete foundations - £5,905

Convert a bungalow loft - £28,655

Convert a basement - £33,621