From £2,352
Thatcham, RG19
Need to find an Extension Builder near you for all your extension buildering work?
Complete Building Services provides a local, trusted ext...
From £2,240
Need an Extension Builder in Thatcham? Helyar Project Services Ltd has been helping local clients (20 mile radius) with their extension buildering ...
From £2,408
A Stanley Building Services is an established and experienced local extension builder in Thatcham. Please contact us for a free, no obligation quot...
From £2,496
Fabric First Build Projects Ltd are here to help customers who need an Extension Builder in Thatcham. We offer a competitive rate to complete all y...
From £2,296
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,368
Relax... you have found a reliable extension builder in Thatcham. Total Home Improvements is a friendly and reliable company based in Thatcham who ...
From £2,544
Trusted and professional extension builder in Thatcham. Experienced in all extension buildering work and keeping within budget and on quote. Bradfi...
From £2,560
Our building services company ROK Construction who are family-run have thirty-years experience. We have been helping customers in Baughurst and the...
From £2,632
Trusted and professional extension builder in Thatcham. Experienced in all extension buildering work and keeping within budget and on quote. Brant ...
From £2,232
Hartwood Oak Buildings Ltd. are here to help customers who need an Extension Builder in Thatcham. We offer a competitive rate to complete all your ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thatcham it ranges from £2,232 (Hartwood Oak Buildings Ltd. based in RG20) to £2,632 (Brant Builders based in RG26).
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 Thatcham by posting a job with HaMuch and we will send it to extension builders in Thatcham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Thatcham | £38 | £266 |
| Install An RSJ near Newbury | £37 | £262 |
| Install An RSJ near Basingstoke & Deane | £39 | £273 |
| Install An RSJ near Basingstoke | £39 | £274 |
| Install An RSJ near Reading | £42 | £266 |
| Install An RSJ near Caversham | £38 | £266 |
| Install An RSJ near Didcot | £36 | £266 |
| Install An RSJ near Woodley | £42 | £267 |
| Install An RSJ near Andover | £40 | £248 |
| Install An RSJ near Wokingham | £41 | £280 |
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 - £17,713

Two storey extension - £88,319

Build a timber frame extension - £26,213

Build a swimming pool - £81,213

Single storey extension - £59,256

Side return extension - £43,894

Install an RSJ - £2,413

Outbuilding - £10,213

Build a Mansard loft conversion - £52,213

Loft conversion - £35,745

Build a kitchen extension - £42,213

Hip to gable loft conversion - £42,213

Granny annexe - £87,213

Garden office - £10,213

Convert a Garage - £16,213

Garage - £18,713

Build a flat roof extension - £22,213

Build a dormer loft conversion - £42,213

Concrete foundations - £6,463

Convert a bungalow loft - £29,213

Convert a basement - £39,894