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With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joine...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Rathfriland it ranges from £1,840 (G K Contracts Building & Joinery based in BT32) to £1,840 (G K Contracts Building & Joinery based in BT32).
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 Rathfriland by posting a job with HaMuch and we will send it to extension builders in Rathfriland.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Banbridge | £29 | £205 |
| Install An RSJ near Kilkeel | £28 | £182 |
| Install An RSJ near Waringstown | £23 | £167 |
| Install An RSJ near Hillsborough and Culcavy | £25 | £170 |
| Install An RSJ near Ballynahinch | £19 | £189 |
| Install An RSJ near Craigavon | £23 | £181 |
| Install An RSJ near Maghaberry | £31 | £205 |
| Install An RSJ near Lisburn | £24 | £164 |
| Install An RSJ near Saintfield | £23 | £162 |
| Install An RSJ near Carryduff | £23 | £158 |
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 - £17,140

Two storey extension - £87,460

Build a timber frame extension - £25,640

Build a swimming pool - £80,640

Single storey extension - £47,800

Side return extension - £37,450

Install an RSJ - £1,840

Outbuilding - £9,640

Build a Mansard loft conversion - £51,640

Loft conversion - £30,375

Build a kitchen extension - £41,640

Hip to gable loft conversion - £41,640

Granny annexe - £86,640

Garden office - £9,640

Convert a Garage - £15,640

Garage - £18,140

Build a flat roof extension - £21,640

Build a dormer loft conversion - £41,640

Concrete foundations - £5,890

Convert a bungalow loft - £28,640

Convert a basement - £33,450