RSJ cost in SY18
RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional.
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SY18 it ranges from £1480 (SDW CONSTRUCTION LTD based in SY15) to £1720 (SP Coupland Ltd based in SY25).
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 SY18 by posting a job with HaMuch and we will send it to extension builders in SY18.
Estimates for common extension builder jobs in SY18;
| Job | Estimate |
| Underpinning a house | £16913 |
| Build a two storey extension | £87119 |
| Build a timber frame extension | £25413 |
| Install a swimming pool | £80413 |
| Cost to build a single storey extension | £38256 |
| Cost to build a side return extension | £30894 |
| Install an RSJ | £1613 |
| Build an outbuilding | £9413 |
| Build a mansard loft conversion | £51413 |
| Cost of a loft conversion | £28245 |
| Build a kitchen extension | £41413 |
| Build a hip to gable loft conversion | £41413 |
| Build a granny annexe | £86413 |
| Build a garden office | £9413 |
| Convert a garage | £15413 |
| Build a new garage | £17913 |
| Build a flat roof extension | £21413 |
| Build a dormer loft conversion | £41413 |
| Lay a concrete foundation | £5663 |
| Convert a bungalow loft | £28413 |
| Basement conversion cost | £30894 |
Rates for other SY18 trades
Extension Builders in SY18
| Business name | RSJ installation cost |
|---|---|
| EVABUILD LIMITED, , SY16 | £1560 |
| SDW CONSTRUCTION LTD, , SY15 | £1480 |
| Cherry Build Limited, Llandrindod Wells, LD1 | £1664 |
| DRAGON CONSTRUCTION T/A, , SY25 | £1640 |
| SP Coupland Ltd, Sir Ceredigion, SY25 | £1720 |