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 £2,352

Last active Oct 26
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Dallcompanies Limited

Our building services company Dallcompanies Limited was established in May 2023, but have been helping customers in Milton Keynes and the surroundi...

From £2,048

Last active Oct 26
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Highland Homes & Gardens

Need an Extension Builder in Milton Keynes? Highland Homes & Gardens has been helping local clients (20 mile radius) with their extension builderin...

From £2,240

Last active Oct 26
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Langton Build

Trusted and professional extension builder in Milton Keynes. Experienced in all extension buildering work and keeping within budget and on quote. L...

From £2,152

Last active Oct 26
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Dean Prichard Building Services

Relax... you have found a reliable extension builder in Milton Keynes. Dean Prichard Building Services is a friendly and reliable company based in ...

From £2,424

Last active Oct 26
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A J S Building Work

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

From £2,472

Last active Oct 26
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Asanta Builder

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

Asanta Builder provides a local, trusted extension build...

From £2,288

Last active Oct 26
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Go-Large Design & Build Ltd

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

Go-Large Design & Build Ltd provides a local, trusted ex...

From £2,216

Last active Oct 26
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D Catt Builders

Need an Extension Builder in Milton Keynes? D Catt Builders has been helping local clients (20 mile radius) with their extension buildering jobs fo...

From £2,640

Last active Oct 26
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EXPERT BUILDING SERVICES

EXPERT BUILDING SERVICES is an established and experienced local extension builder in Milton Keynes. Please contact us for a free, no obligation qu...

From £2,696

Last active Oct 26
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JAB

John Addis

Our building services company JAB Home Improvements helps customers in Milton Keynes and the surrounding area by providing professional, trustworth...

RSJ cost in Milton Keynes

Estimates for install an rsj near Milton Keynes

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Milton Keynes it ranges from £2,048 (Highland Homes & Gardens based in MK4) to £2,696 (JAB based in MK4).

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

"Internal supporting wall needs removing (3.5m wide) and RSJ installed above plinths within ceiling." - MK19, job posted 01/01/70


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Estimates for common extension builder jobs in Milton Keynes;

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...