From £2,096
Need to install an rsj? trade_vw is competitively priced and quick to quote.
From £1,776
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £2,048
You want to install an rsj? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowners.
From £2,144
JR roofing Lancs Limited is a family-run roofing contractor based in Blackpool, Lancashire. We pride ourselves on our excellent customer service an...
From £1,856
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £1,984
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £1,912
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £1,832
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £2,016
A service with a difference. Priced competitively to install an rsj and more.
From £2,024
We do it all from plan to completion
25 yrs and no complaints ..
modern and contemporary
kitchen bathrooms
From £1,848
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £1,744
A service with a difference. Priced competitively to install an rsj and more.
From £1,848
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £1,736
A friendly extension builder in FY4. Happy to provide references and a free quote to install an rsj.
From £2,032
If you need to install an rsj use an Extension Builder. Work is guarenteed and the cost won't hurt the pocket.
From £1,696
To install an rsj in FY4 we are a reliable and competitive extension builder. Expert service guaranteed.
From £1,880
Ibuild Design & Build is a Blackpool based building and home improvement company providing quality home improvements for proud homeowners across La...
From £1,840
A friendly extension builder in FY4. Happy to provide references and a free quote to install an rsj.
From £1,984
You want to install an rsj? No problem, an Extension Builder is a reliable extension builder with years of experience helping homeowners.
From £2,104
Our building services company NPD Builders have thirty years’ experience and have been helping customers in Preston and the surrounding area by p...
From £1,592
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in FY4 it ranges from £1,592 (Prestige Property Conversions Ltd based in PR8) to £2,200 (Evergreen Developments Nw Ltd based in PR8).
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 FY4 by posting a job with HaMuch and we will send it to extension builders in FY4.
"RSJ installation" - FY3
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Blackpool | £25 | £183 |
| Install An RSJ near Lytham St Annes | £25 | £181 |
| Install An RSJ near Fleetwood | £25 | £180 |
| Install An RSJ near Southport | £23 | £174 |
| Install An RSJ near Penwortham | £26 | £189 |
| Install An RSJ near Fulwood | £26 | £187 |
| Install An RSJ near Preston | £26 | £190 |
| Install An RSJ near Leyland | £27 | £194 |
| Install An RSJ near Bamber Bridge | £26 | £189 |
| Install An RSJ near Formby | £20 | £145 |
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 - £17,196

Two storey extension - £87,544

Build a timber frame extension - £25,696

Build a swimming pool - £80,696

Single storey extension - £48,920

Side return extension - £38,080

Install an RSJ - £1,896

Outbuilding - £9,696

Build a Mansard loft conversion - £51,696

Loft conversion - £30,900

Build a kitchen extension - £41,696

Hip to gable loft conversion - £41,696

Granny annexe - £86,696

Garden office - £9,696

Convert a Garage - £15,696

Garage - £18,196

Build a flat roof extension - £21,696

Build a dormer loft conversion - £41,696

Concrete foundations - £5,946

Convert a bungalow loft - £28,696

Convert a basement - £34,080