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 £2,312

Last active Nov 26
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JASON SHARP SHARP BUILDERS

JASON SHARP SHARP BUILDERS is a trusted extension builder serving customers in Aylesbury and the surrounding area. Contact us to today to get a com...

From £2,368

Last active Oct 26
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Plumb & spark

Cody Stevens

Location

Aylesbury, HP21

Plumb & spark is an established extension buildering business in Aylesbury. We come highly recommended and provide competitive quotes for your wor...

From £2,328

Last active May 26
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THREE HUNDREDS BUILDING LTD

THREE HUNDREDS BUILDING LTD are here to help customers who need an Extension Builder in Aylesbury. We offer a competitive rate to complete all your...

From £2,608

Last active May 26
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STEPHEN PARKIN BUILDING CONTRA

STEPHEN PARKIN BUILDING CONTRA is an established extension buildering business in Aylesbury. We come highly recommended and provide competitive quo...

From £2,592

Last active May 26
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R.O Allum & Sons

We are a family run business that has been trading since 1976 in Tring, Berkhamsted and surrounding areas.

From £2,504

Last active May 26
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A J Shaw Building Services

Relax... you have found a reliable extension builder in Aylesbury. A J Shaw Building Services is a friendly and reliable company based in Aylesbury...

From £2,280

Last active Mar 26
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ADC Landscape And Garden Maintenance Contractors

We are ADC Landscaping & Gardening, owned and run by Ashley Collier. We are a family business based in Aylesbury, Buckinghamshire, and cover all as...

From £2,648

Last active Dec 25
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C HORWOOD CONSTRUCTION

Location

Aylesbury, HP19

Trusted and professional extension builder in Aylesbury. Experienced in all extension buildering work and keeping within budget and on quote. C HOR...

From £2,360

Last active Dec 25
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D M B E BUILDPLUS

D M B E BUILDPLUS is an established and experienced local extension builder in Aylesbury. Please contact us for a free, no obligation quote and com...

From £2,640

Last active Dec 25
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Just Lofts

Just Lofts are here to help customers who need an Extension Builder in Aylesbury. We offer a competitive rate to complete all your extension builde...

RSJ cost in Aylesbury

Estimates for install an rsj near Aylesbury

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Aylesbury it ranges from £2,280 (ADC Landscape And Garden Maintenance Contractors based in HP21) to £2,648 (C HORWOOD CONSTRUCTION based in HP19).

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

"Install an RSJ" - HP20, job posted 01/01/70

"RSJ installation" - HP21, job posted 01/01/70


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Estimates for common extension builder jobs in Aylesbury;

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...