Experienced extension builder ready to quote for your work. J W Building Services is the best extension builder in LS1. No obligation free quotes a...
Need an Extension Builder in LS1? D & D Builders has been helping local clients (20 mile radius) with their extension buildering jobs for many year...
Need an Extension Builder in LS1? Watertight Roofing Leeds has been helping local clients (20 mile radius) with their extension buildering jobs for...
Trusted and professional extension builder in LS1. Experienced in all extension buildering work and keeping within budget and on quote. NE BUILDING...
Trusted and professional extension builder in LS1. Experienced in all extension buildering work and keeping within budget and on quote. Fearnville ...
From £2,008
Relax... you have found a reliable extension builder in LS1. Hoqs Construction is a friendly and reliable company based in LS1 who consider no job ...
From £2,136
In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the addition...
From £1,816
Relax... you have found a reliable extension builder in LS1. Hozman Design & Joinery is a friendly and reliable company based in LS1 who consider n...
From £2,320
We here at Bella Decorating Ltd. are your go-to all in one solution for every form of interior renovation your home needs. Starting from Bathrooms,...
From £1,904
Our building services company Inspired Builds was established in 2020, but collectively have over 35 years of experience, providing professional, t...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in LS1 it ranges from £1,816 (Hozman Design & Joinery based in LS11) to £2,320 (Bella Construction Ltd. based in LS6).
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 LS1 by posting a job with HaMuch and we will send it to extension builders in LS1.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Leeds | £31 | £236 |
| Install An RSJ near Chapeltown | £30 | £232 |
| Install An RSJ near Beeston | £31 | £236 |
| Install An RSJ near Morley | £31 | £239 |
| Install An RSJ near Pudsey | £30 | £226 |
| Install An RSJ near Rothwell | £30 | £230 |
| Install An RSJ near Batley | £32 | £239 |
| Install An RSJ near Wakefield | £31 | £240 |
| Install An RSJ near Ossett | £33 | £245 |
| Install An RSJ near Dewsbury | £33 | £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 - £17,332

Two storey extension - £87,748

Build a timber frame extension - £25,832

Build a swimming pool - £80,832

Single storey extension - £51,640

Side return extension - £39,610

Install an RSJ - £2,032

Outbuilding - £9,832

Build a Mansard loft conversion - £51,832

Loft conversion - £32,175

Build a kitchen extension - £41,832

Hip to gable loft conversion - £41,832

Granny annexe - £86,832

Garden office - £9,832

Convert a Garage - £15,832

Garage - £18,332

Build a flat roof extension - £21,832

Build a dormer loft conversion - £41,832

Concrete foundations - £6,082

Convert a bungalow loft - £28,832

Convert a basement - £35,610