Need to find an Extension Builder near you for all your extension buildering work?
JOHN ROSS BUILDERS LTD provides a local, trusted extensi...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Fixit Cheshire is an established and experienced local extension builder in WA4. Please contact us for a free, no obligation quote and competitive ...
J.T.Construction is a trusted extension builder serving customers in WA4 and the surrounding area. Contact us to today to get a competitive quote f...
Get an Extension Builder in WA4 who you can trust. National Plumbing and Heating provide friendly and reliable extension buildering services to the...
From £1,848
Trusted and professional extension builder in WA4. Experienced in all extension buildering work and keeping within budget and on quote. HPH Improvm...
From £1,864
Trusted and professional extension builder in WA4. Experienced in all extension buildering work and keeping within budget and on quote. I Wright Bu...
From £2,280
Rdh Property Services is an established and experienced local extension builder in WA4. Please contact us for a free, no obligation quote and compe...
From £1,976
RP Construction Design is an established extension buildering business in WA4. We come highly recommended and provide competitive quotes for your w...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WA4 it ranges from £1,848 (HPH Improvment&Building based in WA2) to £2,280 (Rdh Property Services based in WA2).
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 WA4 by posting a job with HaMuch and we will send it to extension builders in WA4.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Warrington | £31 | £222 |
| Install An RSJ near Runcorn | £33 | £228 |
| Install An RSJ near Newton-le-Willows | £31 | £221 |
| Install An RSJ near Halton | £31 | £220 |
| Install An RSJ near Widnes | £31 | £220 |
| Install An RSJ near Golborne | £30 | £222 |
| Install An RSJ near Irlam | £32 | £225 |
| Install An RSJ near Altrincham | £32 | £228 |
| Install An RSJ near St Helens | £31 | £224 |
| Install An RSJ near Ashton-in-Makerfield | £30 | £220 |
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 - £17,314

Two storey extension - £87,721

Build a timber frame extension - £25,814

Build a swimming pool - £80,814

Single storey extension - £51,284

Side return extension - £39,410

Install an RSJ - £2,014

Outbuilding - £9,814

Build a Mansard loft conversion - £51,814

Loft conversion - £32,008

Build a kitchen extension - £41,814

Hip to gable loft conversion - £41,814

Granny annexe - £86,814

Garden office - £9,814

Convert a Garage - £15,814

Garage - £18,314

Build a flat roof extension - £21,814

Build a dormer loft conversion - £41,814

Concrete foundations - £6,064

Convert a bungalow loft - £28,814

Convert a basement - £35,410