Relax... you have found a reliable extension builder in Gainsborough. LFC Builders is a friendly and reliable company based in Gainsborough who con...
CRAIG PARR BUILDERS is an established extension buildering business in Gainsborough. We come highly recommended and provide competitive quotes for ...
From £1,840
Nigel Corfield
C.L.Corfield Ltd are a well estblished (1963) family run business, who take great pride in providing a quality service. Our services over the years...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Gainsborough it ranges from £1,840 (C L CORFIELD LIMITED based in DN9) to £2,128 (CRAIG PARR BUILDERS based in DN21).
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 Gainsborough by posting a job with HaMuch and we will send it to extension builders in Gainsborough.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Gainsborough | £30 | £234 |
| Install An RSJ near Bassetlaw | £31 | £243 |
| Install An RSJ near Retford | £31 | £243 |
| Install An RSJ near Lincoln | £31 | £232 |
| Install An RSJ near Scunthorpe | £26 | £207 |
| Install An RSJ near North Lincolnshire | £28 | £216 |
| Install An RSJ near Doncaster | £29 | £238 |
| Install An RSJ near Worksop | £33 | £265 |
| Install An RSJ near Wickersley | £33 | £257 |
| Install An RSJ near Goole | £26 | £217 |
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 - £17,292

Two storey extension - £87,688

Build a timber frame extension - £25,792

Build a swimming pool - £80,792

Single storey extension - £50,840

Side return extension - £39,160

Install an RSJ - £1,992

Outbuilding - £9,792

Build a Mansard loft conversion - £51,792

Loft conversion - £31,800

Build a kitchen extension - £41,792

Hip to gable loft conversion - £41,792

Granny annexe - £86,792

Garden office - £9,792

Convert a Garage - £15,792

Garage - £18,292

Build a flat roof extension - £21,792

Build a dormer loft conversion - £41,792

Concrete foundations - £6,042

Convert a bungalow loft - £28,792

Convert a basement - £35,160