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T.I Building is a trusted extension builder serving customers in Shankill Road and the surrounding area. Contact us to today to get a competitive q...
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
Relax... you have found a reliable extension builder in Shankill Road. SM Plumbing & Heating is a friendly and reliable company based in Shankill R...
From £1,536
Trusted and professional extension builder in Shankill Road. Experienced in all extension buildering work and keeping within budget and on quote. B...
From £1,496
Ballantine building solutions is an established extension buildering business in Shankill Road. We come highly recommended and provide competitive ...
From £1,376
Trusted and professional extension builder in Shankill Road. Experienced in all extension buildering work and keeping within budget and on quote. E...
From £1,584
Designco Ltd is an established extension buildering business in Shankill Road. We come highly recommended and provide competitive quotes for your w...
From £1,576
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,464
Trusted and professional extension builder in Shankill Road. Experienced in all extension buildering work and keeping within budget and on quote. D...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Shankill Road it ranges from £1,336 (Mount Oriel Conversions & Extensions based in BT8) 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 Shankill Road by posting a job with HaMuch and we will send it to extension builders in Shankill Road.
"RSJ installation" - BELFAST, job posted 09/08/25
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Belfast | £23 | £161 |
| Install An RSJ near Carryduff | £23 | £158 |
| Install An RSJ near Holywood | £23 | £159 |
| Install An RSJ near Greenisland | £23 | £153 |
| Install An RSJ near Lisburn | £24 | £164 |
| Install An RSJ near Comber | £22 | £160 |
| Install An RSJ near Crumlin | £26 | £194 |
| Install An RSJ near Ballyclare | £20 | £124 |
| Install An RSJ near Ballygowan | £24 | £183 |
| Install An RSJ near Hillsborough and Culcavy | £25 | £170 |
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 - £16,822

Two storey extension - £86,984

Build a timber frame extension - £25,322

Build a swimming pool - £80,322

Single storey extension - £41,448

Side return extension - £33,877

Install an RSJ - £1,522

Outbuilding - £9,322

Build a Mansard loft conversion - £51,322

Loft conversion - £27,398

Build a kitchen extension - £41,322

Hip to gable loft conversion - £41,322

Granny annexe - £86,322

Garden office - £9,322

Convert a Garage - £15,322

Garage - £17,822

Build a flat roof extension - £21,322

Build a dormer loft conversion - £41,322

Concrete foundations - £5,572

Convert a bungalow loft - £28,322

Convert a basement - £29,877