From £1,520
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,152
We offer a range of building services that are tailored to meet the specific needs of our clients. Whether you are looking to extend your home, con...
From £1,200
Honest, reliable, experienced building/civil engineering contractor established in 2001.
From £2,224
JG Design & Build is an established extension buildering business in Southwell. We come highly recommended and provide competitive quotes for your ...
From £2,056
Relax... you have found a reliable extension builder in Southwell. Bennett Damp Proofing & Timber is a friendly and reliable company based in South...
From £2,136
Need an Extension Builder in Southwell? Patrick David Building Services Limited has been helping local clients (20 mile radius) with their extensio...
From £2,088
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,112
Need to find an Extension Builder near you for all your extension buildering work?
M F Westwick Construction Ltd provides a local, trusted ...
From £1,960
RMS Building Services is a trusted extension builder serving customers in Southwell and the surrounding area. Contact us to today to get a competit...
From £2,200
Need to find an Extension Builder near you for all your extension buildering work?
SMM Property Services provides a local, trusted extensio...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Southwell it ranges from £1,200 (HUSKINSON CONSTR SRVCS LTD based in NG16) to £2,224 (JG Design & Build based in NG8).
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 Southwell by posting a job with HaMuch and we will send it to extension builders in Southwell.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Newark-on-Trent | £33 | £241 |
| Install An RSJ near Arnold | £35 | £244 |
| Install An RSJ near Gedling | £33 | £242 |
| Install An RSJ near Carlton | £33 | £242 |
| Install An RSJ near Forest Town | £33 | £263 |
| Install An RSJ near Mansfield | £33 | £262 |
| Install An RSJ near Hucknall | £35 | £258 |
| Install An RSJ near Mansfield Woodhouse | £33 | £263 |
| Install An RSJ near Nottingham | £34 | £241 |
| Install An RSJ near West Bridgford | £33 | £245 |
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 - £17,265

Two storey extension - £87,647

Build a timber frame extension - £25,765

Build a swimming pool - £80,765

Single storey extension - £50,296

Side return extension - £38,854

Install an RSJ - £1,965

Outbuilding - £9,765

Build a Mansard loft conversion - £51,765

Loft conversion - £31,545

Build a kitchen extension - £41,765

Hip to gable loft conversion - £41,765

Granny annexe - £86,765

Garden office - £9,765

Convert a Garage - £15,765

Garage - £18,265

Build a flat roof extension - £21,765

Build a dormer loft conversion - £41,765

Concrete foundations - £6,015

Convert a bungalow loft - £28,765

Convert a basement - £34,854