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From £2,064
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How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Clumber And Hardwick it ranges from £2,064 (Gilman+Child based in DN22) to £2,064 (Gilman+Child based in DN22).
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 Clumber And Hardwick by posting a job with HaMuch and we will send it to extension builders in Clumber And Hardwick.
"RSJ installation 5m Currently in place French door 2m - wall 1m - window 2m Remove door, window and wall, for rsj in prep for bifold doors" - DN22, job posted 06/02/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Retford | £31 | £243 |
| Install An RSJ near Bassetlaw | £31 | £243 |
| Install An RSJ near Gainsborough | £30 | £234 |
| Install An RSJ near Worksop | £33 | £265 |
| Install An RSJ near Lincoln | £31 | £232 |
| Install An RSJ near Forest Town | £33 | £262 |
| Install An RSJ near Mansfield Woodhouse | £33 | £262 |
| Install An RSJ near Wickersley | £32 | £258 |
| Install An RSJ near Doncaster | £29 | £238 |
| Install An RSJ near Mansfield | £33 | £261 |
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 - £17,364

Two storey extension - £87,796

Build a timber frame extension - £25,864

Build a swimming pool - £80,864

Single storey extension - £52,280

Side return extension - £39,970

Install an RSJ - £2,064

Outbuilding - £9,864

Build a Mansard loft conversion - £51,864

Loft conversion - £32,475

Build a kitchen extension - £41,864

Hip to gable loft conversion - £41,864

Granny annexe - £86,864

Garden office - £9,864

Convert a Garage - £15,864

Garage - £18,364

Build a flat roof extension - £21,864

Build a dormer loft conversion - £41,864

Concrete foundations - £6,114

Convert a bungalow loft - £28,864

Convert a basement - £35,970