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.  To see prices and availability for your job click green button.

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Available extension builders in BL1 reply

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From £1,968

Last active Sep 26
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Wallplas

Wallplas is an established extension buildering business in BL1. We come highly recommended and provide competitive quotes for your work.

From £1,888

Last active Sep 26
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WWS Garage Doors & Shutters

WWS Garage Doors & Shutters is a trusted extension builder serving customers in BL1 and the surrounding area. Contact us to today to get a competit...

From £1,832

Last active Sep 26
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Fishers Building & Paving Ltd

Fishers Building & Paving Ltd is an established extension buildering business in BL1. We come highly recommended and provide competitive quotes for...

From £1,864

Last active Sep 26
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QUAYSTONE BUILDING LTD

QUAYSTONE BUILDING LTD are here to help customers who need an Extension Builder in BL1. We offer a competitive rate to complete all your extension ...

From £2,008

Last active Sep 26
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CB BUILDING & JOINERY LTD

Need an Extension Builder in BL1? CB BUILDING & JOINERY LTD has been helping local clients (20 mile radius) with their extension buildering jobs fo...

From £1,904

Last active Sep 26
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BRENCOLL BUILDING

BRENCOLL BUILDING is an established extension buildering business in BL1. We come highly recommended and provide competitive quotes for your work.<...

From £1,800

Last active Sep 26
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Bolton Builders

Bolton Builders is an established and experienced local extension builder in BL1. Please contact us for a free, no obligation quote and competitive...

From £2,240

Last active Aug 26
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PETER BALDWIN BUILDERS

PETER BALDWIN BUILDERS is an established extension buildering business in BL1. We come highly recommended and provide competitive quotes for your w...

From £1,872

Last active Aug 26
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L D Debnam Building Services

L D Debnam Building Services is an established and experienced local extension builder in BL1. Please contact us for a free, no obligation quote an...

From £1,672

Last active Jul 26
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A AND S SCHOFIELD BLDRS LTD

Simon Schofield

A AND S SCHOFIELD BLDRS LTD is an established extension buildering business in BL1. We come highly recommended and provide competitive quotes for y...

RSJ cost in BL1

Estimates for install an rsj near BL1

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in BL1 it ranges from £1,672 (A AND S SCHOFIELD BLDRS LTD based in BL3) to £2,240 (PETER BALDWIN BUILDERS based in BL1).

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 BL1 by posting a job with HaMuch and we will send it to extension builders in BL1.

"RSJ installation" - BOLTON, job posted 17/09/25


Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Install An RSJ near Bolton£31£219
Install An RSJ near Farnworth£30£219
Install An RSJ near Horwich£30£219
Install An RSJ near Westhoughton£31£222
Install An RSJ near Little Hulton£31£220
Install An RSJ near Atherton£31£223
Install An RSJ near Radcliffe£30£220
Install An RSJ near Bury£30£219
Install An RSJ near Hindley£30£219
Install An RSJ near Swinton£32£234

Estimates for common extension builder jobs in BL1;

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...