From £1,648
Building maintenance services offer a professional and polite reliable service to our clients and custom , with over 20years in the building trade ...
From £1,776
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,096
Experienced extension builder ready to quote for your work. Park home developments is the best extension builder in LE15. No obligation free quotes...
From £1,800
Need to find an Extension Builder near you for all your extension buildering work?
QKS Limited provides a local, trusted extension builderi...
From £2,080
sunnyday foster home is an established and experienced local extension builder in LE15. Please contact us for a free, no obligation quote and compe...
From £1,824
A P PLastering are here to help customers who need an Extension Builder in LE15. We offer a competitive rate to complete all your extension builder...
From £2,080
In an unstable market, house extensions are often the most viable option, helping you to get the most out of the space you have without the additio...
From £2,544
LMS Construction are a reputable company of builders, established over 15 years ago. Since then, we have been helping customers throughout the Camb...
From £1,672
Ascot Property Solutions Limited is an established and experienced local extension builder in LE15. Please contact us for a free, no obligation quo...
From £2,048
Trusted and professional extension builder in LE15. Experienced in all extension buildering work and keeping within budget and on quote. Stace Roof...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in LE15 it ranges from £1,648 (General building and maintenance services based in LE15) to £2,544 (LMS Construction based in PE8).
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 LE15 by posting a job with HaMuch and we will send it to extension builders in LE15.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Corby | £30 | £214 |
| Install An RSJ near Melton Mowbray | £31 | £222 |
| Install An RSJ near Market Harborough | £31 | £217 |
| Install An RSJ near Hamilton | £29 | £216 |
| Install An RSJ near Kettering | £34 | £237 |
| Install An RSJ near Oadby | £28 | £211 |
| Install An RSJ near Wigston | £28 | £214 |
| Install An RSJ near Grantham | £38 | £228 |
| Install An RSJ near Leicester | £29 | £216 |
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 - £17,257

Two storey extension - £87,635

Build a timber frame extension - £25,757

Build a swimming pool - £80,757

Single storey extension - £50,136

Side return extension - £38,764

Install an RSJ - £1,957

Outbuilding - £9,757

Build a Mansard loft conversion - £51,757

Loft conversion - £31,470

Build a kitchen extension - £41,757

Hip to gable loft conversion - £41,757

Granny annexe - £86,757

Garden office - £9,757

Convert a Garage - £15,757

Garage - £18,257

Build a flat roof extension - £21,757

Build a dormer loft conversion - £41,757

Concrete foundations - £6,007

Convert a bungalow loft - £28,757

Convert a basement - £34,764