From £2,400
WJW Home Improvements - Friendly and professional builders. We specialize in extensions, loft conversions, and big renovation projects. Our motto i...
From £2,328
Wantage, OX12
Relax... you have found a reliable extension builder in Wantage. CHF CONSTRUCTION is a friendly and reliable company based in Wantage who consider ...
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 Wantage. Please contact us for a free, no obligation quot...
From £2,400
The business can carry out all aspects of building work:- single or double storey extensions- kitchen and bathroom installations- p...
From £2,304
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in Wantage...
From £2,232
Trusted and professional extension builder in Wantage. Experienced in all work and keeping within budget and on quote. Jamie Langlands Garden Desi...
From £2,176
D.Bradbury Property Services are here to help customers who need an Extension Builder in Wantage. We offer a competitive rate to complete all your ...
From £2,296
Trusted and professional extension builder in Wantage. Experienced in all work and keeping within budget and on quote. Jigsaw Complete Building Li...
From £2,208
Relax... you have found a reliable extension builder in Wantage. HORAN CONSTRUCTION SERVCS LTD is a friendly and reliable company based in Wantage ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Wantage it ranges from £2,160 (Threesixfive FM Services Ltd based in OX11) to £2,400 (WJW Home Improvements based in OX12).
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 Wantage by posting a job with HaMuch and we will send it to extension builders in Wantage.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Vale of White Horse | £32 | £242 |
| Install An RSJ near Didcot | £31 | £231 |
| Install An RSJ near Abingdon-on-Thames | £31 | £228 |
| Install An RSJ near Oxford | £32 | £230 |
| Install An RSJ near Witney | £29 | £219 |
| Install An RSJ near Newbury | £32 | £228 |
| Install An RSJ near Stratton St Margaret | £32 | £208 |
| Install An RSJ near South Oxfordshire | £32 | £229 |
| Install An RSJ near Swindon | £32 | £207 |
| Install An RSJ near Thatcham | £33 | £229 |
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 - £17,582

Two storey extension - £88,124

Build a timber frame extension - £26,082

Build a swimming pool - £81,082

Single storey extension - £56,648

Side return extension - £42,427

Install an RSJ - £2,282

Outbuilding - £10,082

Build a Mansard loft conversion - £52,082

Loft conversion - £34,523

Build a kitchen extension - £42,082

Hip to gable loft conversion - £42,082

Granny annexe - £87,082

Garden office - £10,082

Convert a Garage - £16,082

Garage - £18,582

Build a flat roof extension - £22,082

Build a dormer loft conversion - £42,082

Concrete foundations - £6,332

Convert a bungalow loft - £29,082

Convert a basement - £38,427