Need to find an Extension Builder near you for all your extension buildering work?
JOHN ROSS BUILDERS LTD provides a local, trusted extensi...
Get an Extension Builder in WA3 who you can trust. National Plumbing and Heating provide friendly and reliable extension buildering services to the...
Hello, I am Allan. I have run Allan Rowe Property Services since September 2014. I am based in Newton Le Willows and provide a wide range of proper...
From £2,000
Need to find an Extension Builder near you for all your extension buildering work?
J R Building Services provides a local, trusted extensio...
From £2,200
SBA Facilities is a family run business founded by Director, Josef who has over 25 years of experience with the corporate, commercial, and domestic...
From £1,936
Need an Extension Builder in WA3? Space for Edit has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
From £1,848
Trusted and professional extension builder in WA3. Experienced in all extension buildering work and keeping within budget and on quote. HPH Improvm...
From £1,896
Welcome to Space Design & Build a building company based in Warrington.With nearly 40 years combined experience in the industry Space Design & Buil...
From £1,864
Trusted and professional extension builder in WA3. Experienced in all extension buildering work and keeping within budget and on quote. I Wright Bu...
From £1,992
Our building services company Compass Property Renovations (North West) Ltd was established in 2000. Since then we have been helping customers in W...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WA3 it ranges from £1,848 (HPH Improvment&Building based in WA2) to £2,232 (Allan Rowe Property Services based in WA12).
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 WA3 by posting a job with HaMuch and we will send it to extension builders in WA3.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Golborne | £30 | £222 |
| Install An RSJ near Leigh | £31 | £224 |
| Install An RSJ near Newton-le-Willows | £31 | £221 |
| Install An RSJ near Ashton-in-Makerfield | £30 | £220 |
| Install An RSJ near Warrington | £31 | £222 |
| Install An RSJ near Irlam | £32 | £225 |
| Install An RSJ near Atherton | £31 | £223 |
| Install An RSJ near Hindley | £30 | £219 |
| Install An RSJ near Westhoughton | £31 | £222 |
| Install An RSJ near Wigan | £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 - £17,304

Two storey extension - £87,706

Build a timber frame extension - £25,804

Build a swimming pool - £80,804

Single storey extension - £51,080

Side return extension - £39,295

Install an RSJ - £2,004

Outbuilding - £9,804

Build a Mansard loft conversion - £51,804

Loft conversion - £31,913

Build a kitchen extension - £41,804

Hip to gable loft conversion - £41,804

Granny annexe - £86,804

Garden office - £9,804

Convert a Garage - £15,804

Garage - £18,304

Build a flat roof extension - £21,804

Build a dormer loft conversion - £41,804

Concrete foundations - £6,054

Convert a bungalow loft - £28,804

Convert a basement - £35,295