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Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Trusted and professional extension builder in Weston-super-mare. Experienced in all extension buildering work and keeping within budget and on quot...
Pat Hancock
Need to find an Extension Builder near you for all your extension buildering work?
P K BUILDING provides a local, trusted extension builder...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
PORTCLIFF BUILDING SERV LTD is an established extension buildering business in Weston-super-mare. We come highly recommended and provide competitiv...
Obsession design and build is a full building services company with an in house team combining extensive experienceand exquisite aspirations. Our t...
From £2,560
Andrew Bishop
We are a medium sized Buisness with a huge reputation for quality workmanship

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Weston-super-mare it ranges from £1,248 (P K BUILDING based in TA8) to £2,560 (A K BISHOP based in BS24).
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 Weston-super-mare by posting a job with HaMuch and we will send it to extension builders in Weston-super-mare.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Weston-super-Mare | £33 | £253 |
| Install An RSJ near Clevedon | £32 | £243 |
| Install An RSJ near North Somerset | £32 | £245 |
| Install An RSJ near Portishead | £33 | £247 |
| Install An RSJ near Penarth | £35 | £224 |
| Install An RSJ near Cardiff | £34 | £223 |
| Install An RSJ near Clifton | £33 | £255 |
| Install An RSJ near Newport | £41 | £233 |
| Install An RSJ near Bristol | £33 | £255 |
| Install An RSJ near Bridgwater | £30 | £236 |
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 - £17,355

Two storey extension - £87,782

Build a timber frame extension - £25,855

Build a swimming pool - £80,855

Single storey extension - £52,097

Side return extension - £39,867

Install an RSJ - £2,055

Outbuilding - £9,855

Build a Mansard loft conversion - £51,855

Loft conversion - £32,389

Build a kitchen extension - £41,855

Hip to gable loft conversion - £41,855

Granny annexe - £86,855

Garden office - £9,855

Convert a Garage - £15,855

Garage - £18,355

Build a flat roof extension - £21,855

Build a dormer loft conversion - £41,855

Concrete foundations - £6,105

Convert a bungalow loft - £28,855

Convert a basement - £35,867