Relax... you have found a reliable extension builder in B30. Tucker Construction is a friendly and reliable company based in B30 who consider no jo...
SM&S General Property Repairs is a trusted extension builder serving customers in B30 and the surrounding area. Contact us to today to get a compet...
Wilson & Son is an established and experienced local extension builder in B30. Please contact us for a free, no obligation quote and competitive ra...
Need to find an Extension Builder near you for all your extension buildering work?
Michael Locke Garage Doors provides a local, trusted ext...
Trusted and professional extension builder in B30. Experienced in all extension buildering work and keeping within budget and on quote. D & S Decor...
Relax... you have found a reliable extension builder in B30. Platinum Build is a friendly and reliable company based in B30 who consider no job as ...
Andrew Bouton
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Relax... you have found a reliable extension builder in B30. F.I.I Building Services Ltd is a friendly and reliable company based in B30 who consid...
Experienced extension builder ready to quote for your work. K Barrett Roofing LTD is the best extension builder in B30. No obligation free quotes a...
From £2,056
HSS CONSTRUCTION LTD are here to help customers who need an Extension Builder in B30. We offer a competitive rate to complete all your extension bu...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in B30 it ranges from £1,880 (K Barrett Roofing LTD based in B32) to £2,160 (SM&S General Property Repairs based in B38).
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 B30 by posting a job with HaMuch and we will send it to extension builders in B30.
"RSJ installation" - B90, job posted 03/08/26
"Removal of 3 walls and 3 RSJ installations to extend a kitchen. Need for a structual engineering consultation and building control approval since at least one wall will be load bearing." - BIRMINGHAM, job posted 05/05/24
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Birmingham | £28 | £226 |
| Install An RSJ near Oldbury | £29 | £226 |
| Install An RSJ near Halesowen | £28 | £225 |
| Install An RSJ near Smethwick | £28 | £225 |
| Install An RSJ near Solihull | £29 | £231 |
| Install An RSJ near Rowley Regis | £29 | £225 |
| Install An RSJ near West Bromwich | £28 | £225 |
| Install An RSJ near Bromsgrove | £31 | £237 |
| Install An RSJ near Knowle | £31 | £241 |
| Install An RSJ near Sandwell | £29 | £228 |
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 - £17,326

Two storey extension - £87,740

Build a timber frame extension - £25,826

Build a swimming pool - £80,826

Single storey extension - £51,528

Side return extension - £39,547

Install an RSJ - £2,026

Outbuilding - £9,826

Build a Mansard loft conversion - £51,826

Loft conversion - £32,123

Build a kitchen extension - £41,826

Hip to gable loft conversion - £41,826

Granny annexe - £86,826

Garden office - £9,826

Convert a Garage - £15,826

Garage - £18,326

Build a flat roof extension - £21,826

Build a dormer loft conversion - £41,826

Concrete foundations - £6,076

Convert a bungalow loft - £28,826

Convert a basement - £35,547