From £2,056
Downend, BS16
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,080
Relax... you have found a reliable extension builder in Downend. A M I Construction is a friendly and reliable company based in Downend who conside...
From £2,496
N J Laity & Son & Grandson's are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your ...
From £2,040
MOORLAND DESIGN & BUILD LTD are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your e...
From £1,928
Neil Causon & Son is an established and experienced local extension builder in Downend. Please contact us for a free, no obligation quote and compe...
From £2,024
Need an Extension Builder in Downend? Mucha Construcion has been helping local clients (20 mile radius) with their extension buildering jobs for ma...
From £2,744
GARY G BOND LIMITED are here to help customers who need an Extension Builder in Downend. We offer a competitive rate to complete all your extension...
From £2,120
Relax... you have found a reliable extension builder in Downend. RD Pope Construction is a friendly and reliable company based in Downend who consi...
From £1,968
Trusted and professional extension builder in Downend. Experienced in all extension buildering work and keeping within budget and on quote. Jeremy ...
From £2,408
FEATHERBED CONSTRUCTION is a trusted extension builder serving customers in Downend and the surrounding area. Contact us to today to get a competit...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Downend it ranges from £1,928 (Neil Causon & Son based in BS21) to £2,744 (GARY G BOND LIMITED based in BS16).
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 Downend by posting a job with HaMuch and we will send it to extension builders in Downend.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Kingswood | £34 | £257 |
| Install An RSJ near South Gloucestershire | £34 | £260 |
| Install An RSJ near Bristol | £33 | £255 |
| Install An RSJ near Bradley Stoke | £34 | £259 |
| Install An RSJ near Clifton | £33 | £255 |
| Install An RSJ near Keynsham | £33 | £251 |
| Install An RSJ near Yate | £34 | £263 |
| Install An RSJ near Portishead | £33 | £247 |
| Install An RSJ near Bath | £32 | £249 |
| Install An RSJ near North Somerset | £32 | £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 - £17,486

Two storey extension - £87,980

Build a timber frame extension - £25,986

Build a swimming pool - £80,986

Single storey extension - £54,728

Side return extension - £41,347

Install an RSJ - £2,186

Outbuilding - £9,986

Build a Mansard loft conversion - £51,986

Loft conversion - £33,623

Build a kitchen extension - £41,986

Hip to gable loft conversion - £41,986

Granny annexe - £86,986

Garden office - £9,986

Convert a Garage - £15,986

Garage - £18,486

Build a flat roof extension - £21,986

Build a dormer loft conversion - £41,986

Concrete foundations - £6,236

Convert a bungalow loft - £28,986

Convert a basement - £37,347