From £2,064
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Swaffham it ranges from £2,064 (QUINN CONSTRUCTION SERVICES (A based in IP25) to £2,064 (QUINN CONSTRUCTION SERVICES (A based in IP25).
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 Swaffham by posting a job with HaMuch and we will send it to extension builders in Swaffham.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Breckland | £28 | £248 |
| Install An RSJ near Dereham | £25 | £203 |
| Install An RSJ near Kings Lynn & West Norfolk | £31 | £238 |
| Install An RSJ near King's Lynn | £33 | £254 |
| Install An RSJ near Thetford | £42 | £277 |
| Install An RSJ near Wisbech | £34 | £255 |
| Install An RSJ near Broadland | £24 | £194 |
| Install An RSJ near Ely | £40 | £279 |
| Install An RSJ near Norwich | £25 | £200 |
| Install An RSJ near Bury St Edmunds | £34 | £251 |
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