From £1,176
Have worked in building industry for over 30 years contracts from government to private sector.
From £1,600
T.I Building is a trusted extension builder serving customers in BT36 and the surrounding area. Contact us to today to get a competitive quote for ...
From £1,336
Need to find an Extension Builder near you for all your extension buildering work?
Mount Oriel Conversions & Extensions provides a local, t...
From £1,568
Relax... you have found a reliable extension builder in BT36. SM Plumbing & Heating is a friendly and reliable company based in BT36 who consider n...
From £1,536
Trusted and professional extension builder in BT36. Experienced in all extension buildering work and keeping within budget and on quote. Belfast Lo...
From £1,496
Ballantine building solutions is an established extension buildering business in BT36. We come highly recommended and provide competitive quotes fo...
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 £1,584
Designco Ltd is an established extension buildering business in BT36. We come highly recommended and provide competitive quotes for your work.
...
How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BT36 it ranges from £1,176 (Anak based in BT40) to £2,760 (Build a Boiler based in BT67).
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 BT36 by posting a job with HaMuch and we will send it to extension builders in BT36.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Greenisland | £23 | £153 |
| Install An RSJ near Ballyclare | £20 | £124 |
| Install An RSJ near Belfast | £23 | £161 |
| Install An RSJ near Holywood | £23 | £159 |
| Install An RSJ near Carrickfergus | £23 | £158 |
| Install An RSJ near Carryduff | £23 | £158 |
| Install An RSJ near Crumlin | £26 | £194 |
| Install An RSJ near Bangor | £24 | £183 |
| Install An RSJ near Bangor | £24 | £183 |
| Install An RSJ near Lisburn | £24 | £164 |
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