From £1,952
Relax... you have found a reliable extension builder in SN10. Lee Jackson Roofing Ltd is a friendly and reliable company based in SN10 who consider...
From £2,096
Our building services company TG Roofing and Construction was established over 10 years ago and have been helping customers throughout Wiltshire by...
From £2,352
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,072
MAKEPEACE BUILDING LTD is an established and experienced local extension builder in SN10. Please contact us for a free, no obligation quote and com...
From £2,296
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,272
Relax... you have found a reliable extension builder in SN10. TJ PROFESSIONAL BUILDERS T/A is a friendly and reliable company based in SN10 who con...
From £2,256
DSA CONSTRUCTION is an established extension buildering business in SN10. We come highly recommended and provide competitive quotes for your work.<...
From £2,064
Turnkey Building and Project Management founded on 20 years experience in high end construction and development.
From £2,064
Relax... you have found a reliable extension builder in SN10. A P BUILDING CONTRACTORS LTD is a friendly and reliable company based in SN10 who con...
From £2,384
BEANACRE BUILDERS LTD are here to help customers who need an Extension Builder in SN10. We offer a competitive rate to complete all your extension ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SN10 it ranges from £1,952 (Lee Jackson Roofing Ltd based in SN10) to £2,384 (BEANACRE BUILDERS LTD based in SN12).
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 SN10 by posting a job with HaMuch and we will send it to extension builders in SN10.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Devizes | £32 | £242 |
| Install An RSJ near North Wiltshire | £32 | £242 |
| Install An RSJ near West Wiltshire | £32 | £242 |
| Install An RSJ near Calne | £29 | £225 |
| Install An RSJ near Trowbridge | £34 | £266 |
| Install An RSJ near Chippenham | £34 | £258 |
| Install An RSJ near Frome | £33 | £263 |
| Install An RSJ near Swindon | £38 | £238 |
| Install An RSJ near Thamesdown | £38 | £239 |
| 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 - £17,481

Two storey extension - £87,971

Build a timber frame extension - £25,981

Build a swimming pool - £80,981

Single storey extension - £54,616

Side return extension - £41,284

Install an RSJ - £2,181

Outbuilding - £9,981

Build a Mansard loft conversion - £51,981

Loft conversion - £33,570

Build a kitchen extension - £41,981

Hip to gable loft conversion - £41,981

Granny annexe - £86,981

Garden office - £9,981

Convert a Garage - £15,981

Garage - £18,481

Build a flat roof extension - £21,981

Build a dormer loft conversion - £41,981

Concrete foundations - £6,231

Convert a bungalow loft - £28,981

Convert a basement - £37,284