From £2,000
Trusted and professional extension builder in IP9. Experienced in all extension buildering work and keeping within budget and on quote. James Franc...
From £2,312
San Diego Construction Custom Homes has experience building homes in the UK, Canada and the United States since 1999. It was founded on quality and...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in IP9 it ranges from £2,000 (James Francis based in IP3) to £2,312 (San Diego Construction Inc based in IP3).
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 IP9 by posting a job with HaMuch and we will send it to extension builders in IP9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Ipswich | £33 | £235 |
| Install An RSJ near Harwich | £34 | £248 |
| Install An RSJ near Tendring | £31 | £226 |
| Install An RSJ near Felixstowe | £31 | £231 |
| Install An RSJ near Colchester | £34 | £232 |
| Install An RSJ near Clacton-on-Sea | £31 | £230 |
| Install An RSJ near Suffolk Coastal | £28 | £215 |
| Install An RSJ near Stowmarket | £30 | £221 |
| Install An RSJ near Sudbury | £34 | £229 |
| Install An RSJ near Witham | £36 | £240 |
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 - £17,456

Two storey extension - £87,934

Build a timber frame extension - £25,956

Build a swimming pool - £80,956

Single storey extension - £54,120

Side return extension - £41,005

Install an RSJ - £2,156

Outbuilding - £9,956

Build a Mansard loft conversion - £51,956

Loft conversion - £33,338

Build a kitchen extension - £41,956

Hip to gable loft conversion - £41,956

Granny annexe - £86,956

Garden office - £9,956

Convert a Garage - £15,956

Garage - £18,456

Build a flat roof extension - £21,956

Build a dormer loft conversion - £41,956

Concrete foundations - £6,206

Convert a bungalow loft - £28,956

Convert a basement - £37,005