From £1,496
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £1,584
For all your needs. If you need to install an rsj contact us today to get a no obligation free quote.
From £1,568
You want to install an rsj? No problem, SM Plumbing & Heating is a reliable extension builder with years of experience helping homeowners.
From £1,520
If you need to install an rsj use C.H Property Services. Work is guarenteed and the cost won't hurt the pocket.
From £1,408
A friendly extension builder in Newtownabbey. Happy to provide references and a free quote to install an rsj.
From £1,552
A service with a difference. Priced competitively to install an rsj and more.
From £1,536
A friendly extension builder in Newtownabbey. Happy to provide references and a free quote to install an rsj.
From £1,336
A service with a difference. Priced competitively to install an rsj and more.
From £1,584
You want to install an rsj? No problem, Finch Construction NI is a reliable extension builder with years of experience helping homeowners.
From £1,176
Have worked in building industry for over 30 years contracts from government to private sector.
From £1,600
If you need to install an rsj use T.I Building. Work is guarenteed and the cost won't hurt the pocket.
From £1,472
If you need to install an rsj use apex pharaoh ltd. Work is guarenteed and the cost won't hurt the pocket.

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Newtownabbey it ranges from £1,176 (Anak based in BT40) to £1,688 (AK Building Services based in BT8).
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 Newtownabbey by posting a job with HaMuch and we will send it to extension builders in Newtownabbey.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Greenisland | £20 | £134 |
| Install An RSJ near Holywood | £20 | £138 |
| Install An RSJ near Belfast | £20 | £137 |
| Install An RSJ near Carrickfergus | £21 | £145 |
| Install An RSJ near Ballyclare | £17 | £110 |
| Install An RSJ near Carryduff | £20 | £136 |
| Install An RSJ near Bangor | £20 | £150 |
| Install An RSJ near Bangor | £20 | £150 |
| Install An RSJ near Comber | £20 | £142 |
| Install An RSJ near Ballygowan | £20 | £150 |
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 - £16,797

Two storey extension - £86,946

Build a timber frame extension - £25,297

Build a swimming pool - £80,297

Single storey extension - £40,947

Side return extension - £33,595

Install an RSJ - £1,497

Outbuilding - £9,297

Build a Mansard loft conversion - £51,297

Loft conversion - £27,163

Build a kitchen extension - £41,297

Hip to gable loft conversion - £41,297

Granny annexe - £86,297

Garden office - £9,297

Convert a Garage - £15,297

Garage - £17,797

Build a flat roof extension - £21,297

Build a dormer loft conversion - £41,297

Concrete foundations - £5,547

Convert a bungalow loft - £28,297

Convert a basement - £29,595