From £1,648
Trusted and professional extension builder in Waringstown. Experienced in all extension buildering work and keeping within budget and on quote. The...
From £1,560
Power Construction is an established and experienced local extension builder in Waringstown. Please contact us for a free, no obligation quote and ...
From £1,736
Experienced extension builder ready to quote for your work. Terry Design is the best extension builder in Waringstown. No obligation free quotes an...
From £1,840
With extensive extension buildering experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joine...
From £1,600
T.I Building is a trusted extension builder serving customers in Waringstown and the surrounding area. Contact us to today to get a competitive quo...
From £1,584
Relax... you have found a reliable extension builder in Waringstown. Finch Construction NI is a friendly and reliable company based in Waringstown ...
From £1,536
Trusted and professional extension builder in Waringstown. Experienced in all extension buildering work and keeping within budget and on quote. Bel...
From £1,536
Need an Extension Builder in Waringstown? H.M.Builders has been helping local clients (20 mile radius) with their extension buildering jobs for man...
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...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Waringstown it ranges from £1,336 (Mount Oriel Conversions & Extensions based in BT8) 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 Waringstown by posting a job with HaMuch and we will send it to extension builders in Waringstown.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Waringstown | £23 | £167 |
| Install An RSJ near Maghaberry | £31 | £205 |
| Install An RSJ near Craigavon | £23 | £181 |
| Install An RSJ near Banbridge | £29 | £205 |
| Install An RSJ near Hillsborough and Culcavy | £25 | £170 |
| Install An RSJ near Lisburn | £24 | £164 |
| Install An RSJ near Crumlin | £26 | £194 |
| Install An RSJ near Ballynahinch | £19 | £189 |
| Install An RSJ near Carryduff | £23 | £158 |
| Install An RSJ near Coalisland | £27 | £223 |
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 - £17,014

Two storey extension - £87,270

Build a timber frame extension - £25,514

Build a swimming pool - £80,514

Single storey extension - £45,272

Side return extension - £36,028

Install an RSJ - £1,714

Outbuilding - £9,514

Build a Mansard loft conversion - £51,514

Loft conversion - £29,190

Build a kitchen extension - £41,514

Hip to gable loft conversion - £41,514

Granny annexe - £86,514

Garden office - £9,514

Convert a Garage - £15,514

Garage - £18,014

Build a flat roof extension - £21,514

Build a dormer loft conversion - £41,514

Concrete foundations - £5,764

Convert a bungalow loft - £28,514

Convert a basement - £32,028