From £2,104
NJM GENERAL BUILDING CONTRACTO is an established and experienced local extension builder in OX15. Please contact us for a free, no obligation quote...
From £2,032
CEDAR INTERIORS LIMITED are here to help customers who need an Extension Builder in OX15. We offer a competitive rate to complete all your extensio...
From £2,352
Haras Building Contractors Ltd is a family run business with over 20 years experience within the building trade. We firmly believe in and work from...
From £1,984
ADVANCED BUILDING CONCEPTS is an established and experienced local extension builder in OX15. Please contact us for a free, no obligation quote and...
From £2,016
Trusted and professional extension builder in OX15. Experienced in all extension buildering work and keeping within budget and on quote. P GEORGE C...
From £2,064
Trusted and professional extension builder in OX15. Experienced in all extension buildering work and keeping within budget and on quote. MARCUS STO...
From £1,968
UJ Developments is an established extension buildering business in OX15. We come highly recommended and provide competitive quotes for your work.
From £1,960
M P ALLEN BUILDERS LTD are here to help customers who need an Extension Builder in OX15. We offer a competitive rate to complete all your extension...
From £2,232
Need an Extension Builder in OX15? A C SPENCER BUILDERS has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £2,080
Caliber Construction Ltd is a trusted extension builder serving customers in OX15 and the surrounding area. Contact us to today to get a competitiv...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in OX15 it ranges from £1,960 (M P ALLEN BUILDERS LTD based in CV36) to £2,352 (Haras Building Contractors Ltd based in OX16).
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 OX15 by posting a job with HaMuch and we will send it to extension builders in OX15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Banbury | £33 | £239 |
| Install An RSJ near Cherwell | £35 | £249 |
| Install An RSJ near Bicester | £35 | £249 |
| Install An RSJ near Stratford-upon-Avon | £27 | £215 |
| Install An RSJ near Stratford-on-Avon | £27 | £215 |
| Install An RSJ near Daventry | £31 | £230 |
| Install An RSJ near Witney | £32 | £244 |
| Install An RSJ near Leamington Spa | £27 | £212 |
| Install An RSJ near Warwick | £28 | £213 |
| Install An RSJ near Oxford | £37 | £265 |
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 - £17,379

Two storey extension - £87,819

Build a timber frame extension - £25,879

Build a swimming pool - £80,879

Single storey extension - £52,584

Side return extension - £40,141

Install an RSJ - £2,079

Outbuilding - £9,879

Build a Mansard loft conversion - £51,879

Loft conversion - £32,618

Build a kitchen extension - £41,879

Hip to gable loft conversion - £41,879

Granny annexe - £86,879

Garden office - £9,879

Convert a Garage - £15,879

Garage - £18,379

Build a flat roof extension - £21,879

Build a dormer loft conversion - £41,879

Concrete foundations - £6,129

Convert a bungalow loft - £28,879

Convert a basement - £36,141