From £2,176
Trusted and professional extension builder in RG31. Experienced in all extension buildering work and keeping within budget and on quote. Tower Carp...
From £2,280
Relax... you have found a reliable extension builder in RG31. Crescent Building Services is a friendly and reliable company based in RG31 who consi...
From £1,608
We are a respected building company that takes pride in our work . We have been trades people for 35 years. We will work with you on any projects. ...
From £2,496
Pinnacle Property Services is a trusted extension builder serving customers in RG31 and the surrounding area. Contact us to today to get a competit...
From £2,272
Need to find an Extension Builder near you for all your extension buildering work?
Hathaways of Berkshire Ltd provides a local, trusted ext...
From £2,440
Relax... you have found a reliable extension builder in RG31. Borges Builders is a friendly and reliable company based in RG31 who consider no job ...
From £2,600
TT Building & Roofing is an established extension buildering business in RG31. We come highly recommended and provide competitive quotes for your w...
From £2,184
Relax... you have found a reliable extension builder in RG31. A R Construction is a friendly and reliable company based in RG31 who consider no job...
From £2,176
J.L Building Services are here to help customers who need an Extension Builder in RG31. We offer a competitive rate to complete all your extension ...
From £2,360
Need an Extension Builder in RG31? UNITED BUILDING SERVICES has been helping local clients (20 mile radius) with their extension buildering jobs fo...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RG31 it ranges from £1,608 (Turner Trades based in RG30) to £2,600 (TT Building & Roofing based in RG30).
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 RG31 by posting a job with HaMuch and we will send it to extension builders in RG31.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Reading | £42 | £266 |
| Install An RSJ near Caversham | £38 | £265 |
| Install An RSJ near Woodley | £42 | £266 |
| Install An RSJ near Wokingham | £41 | £280 |
| Install An RSJ near Thatcham | £38 | £266 |
| Install An RSJ near Basingstoke & Deane | £39 | £273 |
| Install An RSJ near South Oxfordshire | £36 | £253 |
| Install An RSJ near Bracknell Forest | £41 | £287 |
| Install An RSJ near Newbury | £37 | £262 |
| Install An RSJ near Bracknell | £41 | £286 |
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 - £17,559

Two storey extension - £88,089

Build a timber frame extension - £26,059

Build a swimming pool - £81,059

Single storey extension - £56,184

Side return extension - £42,166

Install an RSJ - £2,259

Outbuilding - £10,059

Build a Mansard loft conversion - £52,059

Loft conversion - £34,305

Build a kitchen extension - £42,059

Hip to gable loft conversion - £42,059

Granny annexe - £87,059

Garden office - £10,059

Convert a Garage - £16,059

Garage - £18,559

Build a flat roof extension - £22,059

Build a dormer loft conversion - £42,059

Concrete foundations - £6,309

Convert a bungalow loft - £29,059

Convert a basement - £38,166