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Barry Knott
Need to find an Extension Builder near you for all your extension buildering work?
BA Knott Oxford Ltd provides a local, trusted extension ...
Experienced extension builder ready to quote for your work. DRC Construction is the best extension builder in Botley. No obligation free quotes and...
Lambert Home Builds is a trusted extension builder serving customers in Botley and the surrounding area. Contact us to today to get a competitive q...
DOM ZVIGA
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Botley, OX2
Approved extension builder in Botley, covering 20 miles.
Whatever extension buildering work you need, including emergency repairs, hire a co...
Mick Phillips
Michael E Phillips is an established extension buildering business in Botley. We come highly recommended and provide competitive quotes for your wo...
Singh Builders is an established extension buildering business in Botley. We come highly recommended and provide competitive quotes for your work.<...
Botley, OX2
Need an Extension Builder in Botley? K C CONSTRUCTION has been helping local clients (20 mile radius) with their extension buildering jobs for many...
Zain Hassan
Trusted and professional extension builder in Botley. Experienced in all extension buildering work and keeping within budget and on quote. Beaumont...
TNT CONSTRUCTION are here to help customers who need an Extension Builder in Botley. We offer a competitive rate to complete all your extension bui...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Botley it ranges from £2,184 (Lambert Home Builds based in OX2) to £2,712 (Michael E Phillips based in OX2).
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 Botley by posting a job with HaMuch and we will send it to extension builders in Botley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Oxford | £38 | £270 |
| Install An RSJ near Abingdon-on-Thames | £35 | £258 |
| Install An RSJ near Witney | £32 | £244 |
| Install An RSJ near Cherwell | £35 | £249 |
| Install An RSJ near Bicester | £35 | £249 |
| Install An RSJ near Didcot | £36 | £266 |
| Install An RSJ near South Oxfordshire | £36 | £253 |
| Install An RSJ near Vale of White Horse | £36 | £271 |
| Install An RSJ near Aylesbury Vale | £36 | £246 |
| Install An RSJ near Aylesbury | £42 | £270 |
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 - £17,710

Two storey extension - £88,314

Build a timber frame extension - £26,210

Build a swimming pool - £81,210

Single storey extension - £59,192

Side return extension - £43,858

Install an RSJ - £2,410

Outbuilding - £10,210

Build a Mansard loft conversion - £52,210

Loft conversion - £35,715

Build a kitchen extension - £42,210

Hip to gable loft conversion - £42,210

Granny annexe - £87,210

Garden office - £10,210

Convert a Garage - £16,210

Garage - £18,710

Build a flat roof extension - £22,210

Build a dormer loft conversion - £42,210

Concrete foundations - £6,460

Convert a bungalow loft - £29,210

Convert a basement - £39,858