AAA BUILDERS are here to help customers who need an Extension Builder in Mirfield. We offer a competitive rate to complete all your extension build...
Dave Harrison
DAVID HARRISON BUILDING are here to help customers who need an Extension Builder in Mirfield. We offer a competitive rate to complete all your exte...
Trusted and professional extension builder in Mirfield. Experienced in all extension buildering work and keeping within budget and on quote. Garage...
SJL Construction is a trusted extension builder serving customers in Mirfield and the surrounding area. Contact us to today to get a competitive qu...
Need an Extension Builder in Mirfield? P Wilkinson Building has been helping local clients (20 mile radius) with their extension buildering jobs fo...
PR Brick & Stone is an established extension buildering business in Mirfield. We come highly recommended and provide competitive quotes for your wo...
ASHBURY CONSTRUCTION T/A is an established and experienced local extension builder in Mirfield. Please contact us for a free, no obligation quote a...
Experienced extension builder ready to quote for your work. L J Robson (Contracts) Ltd is the best extension builder in Mirfield. No obligation fre...
C Wilcock Builders is an established extension buildering business in Mirfield. We come highly recommended and provide competitive quotes for your ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Mirfield it ranges from £1,832 (AAA BUILDERS based in BD5) to £2,344 (P Wilkinson Building based in HD8).
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 Mirfield by posting a job with HaMuch and we will send it to extension builders in Mirfield.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Mirfield | £31 | £236 |
| Install An RSJ near Dewsbury | £33 | £245 |
| Install An RSJ near Batley | £32 | £239 |
| Install An RSJ near Brighouse | £30 | £230 |
| Install An RSJ near Huddersfield | £29 | £224 |
| Install An RSJ near Ossett | £33 | £245 |
| Install An RSJ near Morley | £31 | £239 |
| Install An RSJ near Kirklees | £30 | £231 |
| Install An RSJ near Wakefield | £31 | £240 |
| Install An RSJ near Halifax | £32 | £243 |
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 - £17,371

Two storey extension - £87,807

Build a timber frame extension - £25,871

Build a swimming pool - £80,871

Single storey extension - £52,424

Side return extension - £40,051

Install an RSJ - £2,071

Outbuilding - £9,871

Build a Mansard loft conversion - £51,871

Loft conversion - £32,543

Build a kitchen extension - £41,871

Hip to gable loft conversion - £41,871

Granny annexe - £86,871

Garden office - £9,871

Convert a Garage - £15,871

Garage - £18,371

Build a flat roof extension - £21,871

Build a dormer loft conversion - £41,871

Concrete foundations - £6,121

Convert a bungalow loft - £28,871

Convert a basement - £36,051