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Experienced extension builder ready to quote for your work. ABS Abbott Preservation is the best extension builder in Street. No obligation free quo...
Trusted and professional extension builder in Street. Experienced in all extension buildering work and keeping within budget and on quote. MICHAEL ...
From £2,696
Experienced extension builder ready to quote for your work. Tim Stradling is the best extension builder in Street. No obligation free quotes and ma...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Street it ranges from £1,728 (C O JOYCE LIMITED based in BA16) to £2,696 (Tim Stradling based in TA10).
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 Street by posting a job with HaMuch and we will send it to extension builders in Street.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near South Somerset | £62 | £270 |
| Install An RSJ near Bridgwater | £30 | £236 |
| Install An RSJ near Yeovil | £34 | £294 |
| Install An RSJ near Taunton | £31 | £242 |
| Install An RSJ near Bath | £32 | £249 |
| Install An RSJ near Weston-super-Mare | £33 | £253 |
| Install An RSJ near North Somerset | £32 | £245 |
| Install An RSJ near Frome | £33 | £263 |
| Install An RSJ near Clevedon | £32 | £243 |
| Install An RSJ near Keynsham | £33 | £251 |
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 - £17,540

Two storey extension - £88,060

Build a timber frame extension - £26,040

Build a swimming pool - £81,040

Single storey extension - £55,800

Side return extension - £41,950

Install an RSJ - £2,240

Outbuilding - £10,040

Build a Mansard loft conversion - £52,040

Loft conversion - £34,125

Build a kitchen extension - £42,040

Hip to gable loft conversion - £42,040

Granny annexe - £87,040

Garden office - £10,040

Convert a Garage - £16,040

Garage - £18,540

Build a flat roof extension - £22,040

Build a dormer loft conversion - £42,040

Concrete foundations - £6,290

Convert a bungalow loft - £29,040

Convert a basement - £37,950