Find a builder to make your building structurally sound

RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional. 

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Install an RSJ cost in L1

ARGYLE BUILDING AND MAINTENANCE

From £1,952

Need an Extension Builder in L1? ARGYLE BUILDING AND MAINTENANCE has been helping local clients (20 mile radius) with their extension buildering jo...

dbd

From £2,168

Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

Art Henry's

From £2,216

Art Henry's are here to help customers who need an Extension Builder in L1. We offer a competitive rate to complete all your extension buildering j...

J J Nuttall Specialist Roofing Ltd

From £1,992

J J Nuttall Specialist Roofing Ltd are here to help customers who need an Extension Builder in L1. We offer a competitive rate to complete all your...

Oxygen Property Partners

From £2,000

Experienced extension builder ready to quote for your work. Oxygen Property Partners is the best extension builder in L1. No obligation free quote...

J.M.C Building Services

From £1,872

J.M.C Building Services is a trusted extension builder serving customers in L1 and the surrounding area. Contact us to today to get a competitive q...

DK Building

From £2,016

DK Building is an established extension buildering business in L1. We come highly recommended and provide competitive quotes for your work.

Glassrooms

From £2,104

Glassrooms is an established extension buildering business in L1. We come highly recommended and provide competitive quotes for your work.

Britannia Builders

From £2,072

Relax... you have found a reliable extension builder in L1. Britannia Builders is a friendly and reliable company based in L1 who consider no job a...

MA Roofing & Building Services

From £1,936

Trusted and professional extension builder in L1. Experienced in all extension buildering work and keeping within budget and on quote. MA Roofing &...

RSJ cost in L1

Estimates for install an rsj near L1

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in L1 it ranges from £1,872 (J.M.C Building Services based in L4) to £2,216 (Art Henry's based in L8).

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 L1 by posting a job with HaMuch and we will send it to extension builders in L1.

"RSJ installation" - LIVERPOOL, job posted 04/09/25


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Liverpool£31£222
Install An RSJ near Birkenhead£31£219
Install An RSJ near Wallasey£33£224
Install An RSJ near Bootle£32£223
Install An RSJ near Bebington£31£222
Install An RSJ near Wirral£31£219
Install An RSJ near Crosby£34£223
Install An RSJ near Kirkby£31£222
Install An RSJ near Huyton with Roby£31£225
Install An RSJ near Knowsley£31£221

Estimates for common extension builder jobs in L1;

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.

More extensions & conversions cost guides...