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Chris Mc gurk
We have over 25 years experience in all building work and renowned for good workmanship All jobs small and large taken on

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Ahoghill it ranges from £1,632 (C McGurk Building Contractor based in BT44) to £1,632 (C McGurk Building Contractor based in BT44).
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 Ahoghill by posting a job with HaMuch and we will send it to extension builders in Ahoghill.
"RSJ installation, I am looking for a price to source and install two beams, photos attached of measurements. Thanks." - BT43, job posted 05/06/26
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Magherafelt | £30 | £238 |
| Install An RSJ near Ballyclare | £20 | £124 |
| Install An RSJ near Ballymoney | £21 | £187 |
| Install An RSJ near Crumlin | £26 | £194 |
| Install An RSJ near Coleraine | £23 | £201 |
| Install An RSJ near Dungiven | £22 | £190 |
| Install An RSJ near Greenisland | £23 | £153 |
| Install An RSJ near Carrickfergus | £23 | £158 |
| Install An RSJ near Belfast | £23 | £161 |
| Install An RSJ near Maghaberry | £31 | £205 |
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 - £16,932

Two storey extension - £87,148

Build a timber frame extension - £25,432

Build a swimming pool - £80,432

Single storey extension - £43,640

Side return extension - £35,110

Install an RSJ - £1,632

Outbuilding - £9,432

Build a Mansard loft conversion - £51,432

Loft conversion - £28,425

Build a kitchen extension - £41,432

Hip to gable loft conversion - £41,432

Granny annexe - £86,432

Garden office - £9,432

Convert a Garage - £15,432

Garage - £17,932

Build a flat roof extension - £21,432

Build a dormer loft conversion - £41,432

Concrete foundations - £5,682

Convert a bungalow loft - £28,432

Convert a basement - £31,110