From £1,696
Trusted and professional extension builder in Ballymoney. Experienced in all extension buildering work and keeping within budget and on quote. purd...
From £1,808
Need an Extension Builder in Ballymoney? SF Carpentry has been helping local clients (20 mile radius) with their extension buildering jobs for many...
From £1,632
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 Ballymoney it ranges from £1,632 (C McGurk Building Contractor based in BT44) to £1,808 (SF Carpentry based in BT51).
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 Ballymoney by posting a job with HaMuch and we will send it to extension builders in Ballymoney.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Ballymoney | £21 | £187 |
| Install An RSJ near Coleraine | £23 | £201 |
| Install An RSJ near Dungiven | £22 | £190 |
| Install An RSJ near Magherafelt | £30 | £238 |
| Install An RSJ near Ballyclare | £20 | £124 |
| Install An RSJ near Londonderry | £24 | £190 |
| Install An RSJ near Larne | £15 | £122 |
| Install An RSJ near Carrickfergus | £23 | £158 |
| Install An RSJ near Greenisland | £23 | £153 |
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 - £17,012

Two storey extension - £87,268

Build a timber frame extension - £25,512

Build a swimming pool - £80,512

Single storey extension - £45,240

Side return extension - £36,010

Install an RSJ - £1,712

Outbuilding - £9,512

Build a Mansard loft conversion - £51,512

Loft conversion - £29,175

Build a kitchen extension - £41,512

Hip to gable loft conversion - £41,512

Granny annexe - £86,512

Garden office - £9,512

Convert a Garage - £15,512

Garage - £18,012

Build a flat roof extension - £21,512

Build a dormer loft conversion - £41,512

Concrete foundations - £5,762

Convert a bungalow loft - £28,512

Convert a basement - £32,010