From £2,176
D.Bradbury Property Services are here to help customers who need an Extension Builder in OX11. We offer a competitive rate to complete all your ext...
From £2,400
The business can carry out all aspects of building work:- single or double storey extensions- kitchen and bathroom installations- p...
From £2,296
Trusted and professional extension builder in OX11. Experienced in all extension buildering work and keeping within budget and on quote. Jigsaw Com...
From £2,160
Friendly local builder... professional tidy and competitive....
From £2,320
Bluestones Garden Design Ltd is an established and experienced local extension builder in OX11. Please contact us for a free, no obligation quote a...
From £2,592
Need to find an Extension Builder near you for all your extension buildering work?
Steel Brook Construction provides a local, trusted exten...
From £2,360
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,296
Countryside Oak is an established and experienced local extension builder in OX11. Please contact us for a free, no obligation quote and competitiv...
From £2,368
Need to find an Extension Builder near you for all your extension buildering work?
Inside Out Oxford, Bespoke Garden Rooms provides a loca...
From £2,056
AJC PROJECT SERVICES Ltd is an established and experienced local extension builder in OX11. Please contact us for a free, no obligation quote and c...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OX11 it ranges from £2,056 (AJC PROJECT SERVICES Ltd based in OX10) to £2,592 (Steel Brook Construction based in OX10).
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 OX11 by posting a job with HaMuch and we will send it to extension builders in OX11.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Didcot | £36 | £266 |
| Install An RSJ near Abingdon-on-Thames | £35 | £258 |
| Install An RSJ near South Oxfordshire | £36 | £253 |
| Install An RSJ near Vale of White Horse | £36 | £271 |
| Install An RSJ near Oxford | £37 | £265 |
| Install An RSJ near Newbury | £37 | £262 |
| Install An RSJ near Thatcham | £38 | £266 |
| Install An RSJ near Caversham | £38 | £266 |
| Install An RSJ near Reading | £42 | £266 |
| Install An RSJ near Witney | £32 | £244 |
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 - £17,602

Two storey extension - £88,154

Build a timber frame extension - £26,102

Build a swimming pool - £81,102

Single storey extension - £57,048

Side return extension - £42,652

Install an RSJ - £2,302

Outbuilding - £10,102

Build a Mansard loft conversion - £52,102

Loft conversion - £34,710

Build a kitchen extension - £42,102

Hip to gable loft conversion - £42,102

Granny annexe - £87,102

Garden office - £10,102

Convert a Garage - £16,102

Garage - £18,602

Build a flat roof extension - £22,102

Build a dormer loft conversion - £42,102

Concrete foundations - £6,352

Convert a bungalow loft - £29,102

Convert a basement - £38,652