From £2,480
Trusted and professional extension builder in HP18. Experienced in all extension buildering work and keeping within budget and on quote. BUILDRIGHT...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in HP18 it ranges from £2,480 (BUILDRIGHT (UK) LTD based in HP17) to £2,480 (BUILDRIGHT (UK) LTD based in HP17).
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 HP18 by posting a job with HaMuch and we will send it to extension builders in HP18.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Aylesbury Vale | £36 | £246 |
| Install An RSJ near Aylesbury | £42 | £270 |
| Install An RSJ near Bicester | £35 | £249 |
| Install An RSJ near Cherwell | £35 | £249 |
| Install An RSJ near Oxford | £37 | £261 |
| Install An RSJ near South Oxfordshire | £36 | £253 |
| Install An RSJ near Wycombe | £39 | £271 |
| Install An RSJ near Leighton Buzzard | £38 | £270 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Hazlemere | £40 | £272 |
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 - £17,780

Two storey extension - £88,420

Build a timber frame extension - £26,280

Build a swimming pool - £81,280

Single storey extension - £60,600

Side return extension - £44,650

Install an RSJ - £2,480

Outbuilding - £10,280

Build a Mansard loft conversion - £52,280

Loft conversion - £36,375

Build a kitchen extension - £42,280

Hip to gable loft conversion - £42,280

Granny annexe - £87,280

Garden office - £10,280

Convert a Garage - £16,280

Garage - £18,780

Build a flat roof extension - £22,280

Build a dormer loft conversion - £42,280

Concrete foundations - £6,530

Convert a bungalow loft - £29,280

Convert a basement - £40,650