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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From £2,024

Last active Oct 26
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T K O Kitchens & Construction

Homeowners look no further if you want a qualified extension builder to work in your home. T K O Kitchens & Construction are tidy and neat, providi...

From £2,072

Last active Oct 26
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SMH Build & Renovate

SMH Build & Renovate is an established extension buildering business in Bolton. We come highly recommended and provide competitive quotes for your ...

From £1,784

Last active Oct 26
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Amak Construction

Amak Construction is an established and experienced local extension builder in Bolton. Please contact us for a free, no obligation quote and compet...

From £2,088

Last active Oct 26
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Advanced Builders & Roofers

Experienced extension builder ready to quote for your work. Advanced Builders & Roofers is the best extension builder in Bolton. No obligation free...

From £1,992

Last active Sep 26
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DC Contractors

Need to find an Extension Builder near you for all your extension buildering work?

DC Contractors provides a local, trusted extension build...

From £1,976

Last active Sep 26
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David Anderson Builders

Relax... you have found a reliable extension builder in Bolton. David Anderson Builders is a friendly and reliable company based in Bolton who cons...

From £2,160

Last active Sep 26
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ESBP Specialists Ltd

Jonathan

Need to find an Extension Builder near you for all your extension buildering work?

ESBP Specialists Ltd provides a local, trusted extension...

From £2,096

Last active Sep 26
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J & C Barker (Builders) Limited

Need to find an Extension Builder near you for all your extension buildering work?

J & C Barker (Builders) Limited provides a local, truste...

From £1,968

Last active Sep 26
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Wallplas

Wallplas is an established extension buildering business in Bolton. 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 Bolton and the surrounding area. Contact us to today to get a compe...

RSJ cost in Bolton

Estimates for install an rsj near Bolton

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Bolton it ranges from £1,784 (Amak Construction based in BL8) to £2,160 (ESBP Specialists Ltd based in M26).

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

"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 Little Hulton£31£220
Install An RSJ near Radcliffe£30£220
Install An RSJ near Westhoughton£31£222
Install An RSJ near Atherton£31£223
Install An RSJ near Horwich£30£219
Install An RSJ near Bury£30£219
Install An RSJ near Swinton£32£234
Install An RSJ near Whitefield£31£229

Estimates for common extension builder jobs in Bolton;

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...