BRIARWOOD BUILDING CONTRS LTD is an established extension buildering business in Grantham. We come highly recommended and provide competitive quote...
From £1,472
Grantham, NG31
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,688
The Glass Box is a trusted extension builder serving customers in Grantham and the surrounding area. Contact us to today to get a competitive quote...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Grantham it ranges from £1,472 (LG Soffits & Fascias based in NG31) to £1,768 (BRIARWOOD BUILDING CONTRS LTD based in NG32).
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 Grantham by posting a job with HaMuch and we will send it to extension builders in Grantham.
"RSJ installation" - NG33, job posted 01/01/70
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Grantham | £38 | £228 |
| Install An RSJ near Newark-on-Trent | £33 | £241 |
| Install An RSJ near Melton Mowbray | £31 | £222 |
| Install An RSJ near Gedling | £33 | £242 |
| Install An RSJ near Carlton | £33 | £242 |
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near West Bridgford | £33 | £245 |
| Install An RSJ near Arnold | £35 | £244 |
| Install An RSJ near Nottingham | £34 | £241 |
| Install An RSJ near Spalding | £32 | £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 - £16,943

Two storey extension - £87,164

Build a timber frame extension - £25,443

Build a swimming pool - £80,443

Single storey extension - £43,853

Side return extension - £35,230

Install an RSJ - £1,643

Outbuilding - £9,443

Build a Mansard loft conversion - £51,443

Loft conversion - £28,525

Build a kitchen extension - £41,443

Hip to gable loft conversion - £41,443

Granny annexe - £86,443

Garden office - £9,443

Convert a Garage - £15,443

Garage - £17,943

Build a flat roof extension - £21,443

Build a dormer loft conversion - £41,443

Concrete foundations - £5,693

Convert a bungalow loft - £28,443

Convert a basement - £31,230