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Benton Builders is an established and experienced local extension builder in Warwickshire. Please contact us for a free, no obligation quote and co...
Relax... you have found a reliable extension builder in Warwickshire. Tucker Construction is a friendly and reliable company based in Warwickshire ...
SM&S General Property Repairs is a trusted extension builder serving customers in Warwickshire and the surrounding area. Contact us to today to get...
Wilson & Son is an established and experienced local extension builder in Warwickshire. Please contact us for a free, no obligation quote and compe...
Andrew Bouton
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need to find an Extension Builder near you for all your extension buildering work?
Avonvale Garage Doors provides a local, trusted extensio...
Ben Birch
I have been in the building industry for 28 years and have carried out extensions,loft conversions, knock throughs, plastering, carpentry,roofing a...
Relax... you have found a reliable extension builder in Warwickshire. F.I.I Building Services Ltd is a friendly and reliable company based in Warwi...
Wayne Hay
Inside & Out property refurbishments Interior Design & Build service Grade1 Grade11 listed buildings complete renovation preservation conservati...
Need to find an Extension Builder near you for all your extension buildering work?
Cubit Contracts provides a local, trusted extension buil...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Warwickshire it ranges from £1,760 (Cubit Contracts based in B98) to £2,520 (Inside & Out Property Refurbishments based in B98).
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 Warwickshire by posting a job with HaMuch and we will send it to extension builders in Warwickshire.
"Total cost of structural engineer report, supply and install 6M RSJ for a load bearing wall to make kitchen/diner." - B90, job posted 01/11/25
"RSJ installation" - B90, job posted 03/08/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Redditch | £32 | £234 |
| Install An RSJ near Warwick | £28 | £213 |
| Install An RSJ near Birmingham | £29 | £229 |
| Install An RSJ near Kenilworth | £30 | £229 |
| Install An RSJ near Bromsgrove | £31 | £237 |
| Install An RSJ near Stratford-on-Avon | £27 | £215 |
| Install An RSJ near Stratford-upon-Avon | £27 | £215 |
| Install An RSJ near Coventry | £29 | £226 |
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 - £17,412

Two storey extension - £87,868

Build a timber frame extension - £25,912

Build a swimming pool - £80,912

Single storey extension - £53,240

Side return extension - £40,510

Install an RSJ - £2,112

Outbuilding - £9,912

Build a Mansard loft conversion - £51,912

Loft conversion - £32,925

Build a kitchen extension - £41,912

Hip to gable loft conversion - £41,912

Granny annexe - £86,912

Garden office - £9,912

Convert a Garage - £15,912

Garage - £18,412

Build a flat roof extension - £21,912

Build a dormer loft conversion - £41,912

Concrete foundations - £6,162

Convert a bungalow loft - £28,912

Convert a basement - £36,510