From £2,744
GARY G BOND LIMITED are here to help customers who need an Extension Builder in SN15. We offer a competitive rate to complete all your extension bu...
From £2,056
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,280
HYATT BUILDING SERVICES are here to help customers who need an Extension Builder in SN15. We offer a competitive rate to complete all your extensio...
From £2,000
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,384
Need to find an Extension Builder near you for all your extension buildering work?
WILSONS BUILDERS CO LTD provides a local, trusted extens...
From £2,352
Prestige Build Services LTD is a trusted extension builder serving customers in SN15 and the surrounding area. Contact us to today to get a competi...
From £1,952
Concept Solutions Bristol Ltd is an established and experienced local extension builder in SN15. Please contact us for a free, no obligation quote ...
From £2,024
24 7 BUILDING SOLUTIONS LTD is a trusted extension builder serving customers in SN15 and the surrounding area. Contact us to today to get a competi...
From £1,736
Need an Extension Builder in SN15? R PEARCE BUILDING has been helping local clients (20 mile radius) with their extension buildering jobs for many ...
From £2,296
MJ solutions is an established and experienced local extension builder in SN15. Please contact us for a free, no obligation quote and competitive ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SN15 it ranges from £1,736 (R PEARCE BUILDING based in SN15) to £2,744 (GARY G BOND LIMITED based in BS16).
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 SN15 by posting a job with HaMuch and we will send it to extension builders in SN15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Calne | £29 | £225 |
| Install An RSJ near Chippenham | £34 | £258 |
| Install An RSJ near West Wiltshire | £32 | £242 |
| Install An RSJ near North Wiltshire | £32 | £242 |
| Install An RSJ near Devizes | £32 | £242 |
| Install An RSJ near Trowbridge | £34 | £266 |
| Install An RSJ near Swindon | £38 | £238 |
| Install An RSJ near Thamesdown | £38 | £239 |
| Install An RSJ near Yate | £34 | £263 |
| Install An RSJ near Stratton St Margaret | £37 | £238 |
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 - £17,482

Two storey extension - £87,974

Build a timber frame extension - £25,982

Build a swimming pool - £80,982

Single storey extension - £54,648

Side return extension - £41,302

Install an RSJ - £2,182

Outbuilding - £9,982

Build a Mansard loft conversion - £51,982

Loft conversion - £33,585

Build a kitchen extension - £41,982

Hip to gable loft conversion - £41,982

Granny annexe - £86,982

Garden office - £9,982

Convert a Garage - £15,982

Garage - £18,482

Build a flat roof extension - £21,982

Build a dormer loft conversion - £41,982

Concrete foundations - £6,232

Convert a bungalow loft - £28,982

Convert a basement - £37,302