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From £1,696
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Newcastle it ranges from £1,696 (Ballygrange Contracts based in BT34) to £1,696 (Ballygrange Contracts based in BT34).
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 Newcastle by posting a job with HaMuch and we will send it to extension builders in Newcastle.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kilkeel | £28 | £182 |
| Install An RSJ near Ballynahinch | £19 | £189 |
| Install An RSJ near Banbridge | £29 | £205 |
| Install An RSJ near Saintfield | £23 | £162 |
| Install An RSJ near Portaferry | £22 | £164 |
| Install An RSJ near Hillsborough and Culcavy | £25 | £170 |
| Install An RSJ near Lisburn | £24 | £164 |
| Install An RSJ near Carryduff | £23 | £158 |
| Install An RSJ near Waringstown | £23 | £167 |
| Install An RSJ near Maghaberry | £31 | £205 |
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 - £16,996

Two storey extension - £87,244

Build a timber frame extension - £25,496

Build a swimming pool - £80,496

Single storey extension - £44,920

Side return extension - £35,830

Install an RSJ - £1,696

Outbuilding - £9,496

Build a Mansard loft conversion - £51,496

Loft conversion - £29,025

Build a kitchen extension - £41,496

Hip to gable loft conversion - £41,496

Granny annexe - £86,496

Garden office - £9,496

Convert a Garage - £15,496

Garage - £17,996

Build a flat roof extension - £21,496

Build a dormer loft conversion - £41,496

Concrete foundations - £5,746

Convert a bungalow loft - £28,496

Convert a basement - £31,830