From £2,328
Relax... you have found a reliable extension builder in OX9. Trew Builders is a friendly and reliable company based in OX9 who consider no job as t...
From £2,368
Platinum Build Ltd are here to help customers who need an Extension Builder in OX9. We offer a competitive rate to complete all your extension buil...
From £2,480
Trusted and professional extension builder in OX9. Experienced in all extension buildering work and keeping within budget and on quote. BUILDRIGHT ...
From £2,408
Maha Khaliq Design is an established and experienced local extension builder in OX9. Please contact us for a free, no obligation quote and competit...
From £2,080
Trusted and professional extension builder in OX9. Experienced in all extension buildering work and keeping within budget and on quote. PERNA CONST...
From £2,080
Relax... you have found a reliable extension builder in OX9. JOHN BURDER CONSTRUCTION LIMIT is a friendly and reliable company based in OX9 who con...
From £2,160
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,552
Draisey is an established extension buildering business in OX9. We come highly recommended and provide competitive quotes for your work.
From £2,168
Hammond Construction is a family owned building, refurbishment and electrical services company who can help you achieve the home of your dreams…
From £2,104
Relax... you have found a reliable extension builder in OX9. Nicola Scannell Design and Property is a friendly and reliable company based in OX9 wh...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OX9 it ranges from £2,080 (PERNA CONSTRUCTION LTD based in OX49) to £2,552 (Draisey based in ox33).
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 OX9 by posting a job with HaMuch and we will send it to extension builders in OX9.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near South Oxfordshire | £36 | £253 |
| Install An RSJ near Aylesbury | £42 | £270 |
| Install An RSJ near Wycombe | £39 | £271 |
| Install An RSJ near Aylesbury Vale | £36 | £246 |
| Install An RSJ near High Wycombe | £39 | £272 |
| Install An RSJ near Oxford | £37 | £263 |
| Install An RSJ near Hazlemere | £40 | £272 |
| Install An RSJ near Bicester | £35 | £249 |
| Install An RSJ near Abingdon-on-Thames | £35 | £258 |
| Install An RSJ near Cherwell | £35 | £249 |
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 - £17,573

Two storey extension - £88,109

Build a timber frame extension - £26,073

Build a swimming pool - £81,073

Single storey extension - £56,456

Side return extension - £42,319

Install an RSJ - £2,273

Outbuilding - £10,073

Build a Mansard loft conversion - £52,073

Loft conversion - £34,433

Build a kitchen extension - £42,073

Hip to gable loft conversion - £42,073

Granny annexe - £87,073

Garden office - £10,073

Convert a Garage - £16,073

Garage - £18,573

Build a flat roof extension - £22,073

Build a dormer loft conversion - £42,073

Concrete foundations - £6,323

Convert a bungalow loft - £29,073

Convert a basement - £38,319