From £2,096
Steven Clark Building Services is an established and experienced local extension builder in DT2. Please contact us for a free, no obligation quote ...
From £1,896
Stuart Lambert
Trusted and professional extension builder in DT2. Experienced in all extension buildering work and keeping within budget and on quote. Stuart's Bu...
From £1,760
Joanne Upshall
We are a locl fun family business with over 20 years experience. We specialise in all aspects of the building trade, no job too big or too sm...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in DT2 it ranges from £1,760 (Poundbury Build and Maintenance based in DT1) to £2,096 (Steven Clark Building Services based in DT1).
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 DT2 by posting a job with HaMuch and we will send it to extension builders in DT2.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Dorchester | £30 | £230 |
| Install An RSJ near Weymouth | £33 | £260 |
| Install An RSJ near Yeovil | £34 | £294 |
| Install An RSJ near Poole | £38 | £250 |
| Install An RSJ near South Somerset | £62 | £270 |
| Install An RSJ near Bournemouth | £38 | £257 |
| Install An RSJ near Taunton | £31 | £242 |
| Install An RSJ near Bridgwater | £30 | £236 |
| Install An RSJ near Salisbury | £35 | £247 |
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 - £17,217

Two storey extension - £87,576

Build a timber frame extension - £25,717

Build a swimming pool - £80,717

Single storey extension - £49,347

Side return extension - £38,320

Install an RSJ - £1,917

Outbuilding - £9,717

Build a Mansard loft conversion - £51,717

Loft conversion - £31,100

Build a kitchen extension - £41,717

Hip to gable loft conversion - £41,717

Granny annexe - £86,717

Garden office - £9,717

Convert a Garage - £15,717

Garage - £18,217

Build a flat roof extension - £21,717

Build a dormer loft conversion - £41,717

Concrete foundations - £5,967

Convert a bungalow loft - £28,717

Convert a basement - £34,320