From £1,672
Trusted and professional extension builder in WA1. Experienced in all extension buildering work and keeping within budget and on quote. Jones Lands...
From £1,872
J.M.C Building Services is a trusted extension builder serving customers in WA1 and the surrounding area. Contact us to today to get a competitive ...
From £1,160
Member since November 2019
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £1,976
Relax... you have found a reliable extension builder in WA1. David Anderson Builders is a friendly and reliable company based in WA1 who consider n...
From £1,992
Need to find an Extension Builder near you for all your extension buildering work?
DC Contractors provides a local, trusted extension build...
From £2,160
Need to find an Extension Builder near you for all your extension buildering work?
ESBP Specialists Ltd provides a local, trusted extension...
From £2,232
Tong Building & Joinery Ltd are here to help customers who need an Extension Builder in WA1. We offer a competitive rate to complete all your exten...
From £1,808
Need an Extension Builder in WA1? MK Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many years. ...
From £2,096
Need to find an Extension Builder near you for all your extension buildering work?
J & C Barker (Builders) Limited provides a local, truste...
From £1,784
Amak Construction is an established and experienced local extension builder in WA1. Please contact us for a free, no obligation quote and competiti...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WA1 it ranges from £1,160 (Aquatec Builder based in OL10) to £2,232 (Tong Building & Joinery Ltd based in CH3).
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 WA1 by posting a job with HaMuch and we will send it to extension builders in WA1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Warrington | £31 | £222 |
| Install An RSJ near Newton-le-Willows | £31 | £221 |
| Install An RSJ near Golborne | £30 | £222 |
| Install An RSJ near Irlam | £32 | £225 |
| Install An RSJ near Runcorn | £33 | £228 |
| Install An RSJ near Halton | £31 | £220 |
| Install An RSJ near Widnes | £31 | £220 |
| Install An RSJ near Leigh | £31 | £224 |
| Install An RSJ near Ashton-in-Makerfield | £30 | £220 |
| Install An RSJ near St Helens | £31 | £224 |
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 - £17,175

Two storey extension - £87,513

Build a timber frame extension - £25,675

Build a swimming pool - £80,675

Single storey extension - £48,504

Side return extension - £37,846

Install an RSJ - £1,875

Outbuilding - £9,675

Build a Mansard loft conversion - £51,675

Loft conversion - £30,705

Build a kitchen extension - £41,675

Hip to gable loft conversion - £41,675

Granny annexe - £86,675

Garden office - £9,675

Convert a Garage - £15,675

Garage - £18,175

Build a flat roof extension - £21,675

Build a dormer loft conversion - £41,675

Concrete foundations - £5,925

Convert a bungalow loft - £28,675

Convert a basement - £33,846