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 £2,464

Last active Mar 26
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Trad Roofing

Experienced extension builder ready to quote for your work. Trad Roofing is the best extension builder in Alton. No obligation free quotes and many...

From £2,384

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RP Superstructures

RP Superstructures was formed in 2011 by principals Gerry Budd and Pat Sheehan following the successful build of Gerry’s own house, using his mul...

From £2,280

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A & J Roofing (Haslemere) Ltd

Location

Alton, GU34

Need an Extension Builder in Alton? A & J Roofing (Haslemere) Ltd has been helping local clients (20 mile radius) with their extension buildering j...

From £2,104

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Vaughan Design and Development

Vaughan Design and Development is an established extension buildering business in Alton. We come highly recommended and provide competitive quotes ...

From £2,304

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360 CONSTRUCTION SURREY LTD

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

360 CONSTRUCTION SURREY LTD provides a local, trusted ex...

From £3,032

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CANADA BUILDERS & ROOFING LTD

John Shea

Experienced extension builder ready to quote for your work. CANADA BUILDERS & ROOFING LTD is the best extension builder in Alton. No obligation fre...

From £2,176

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Design & Construction Support Ltd

Relax... you have found a reliable extension builder in Alton. Design & Construction Support Ltd is a friendly and reliable company based in Alton ...

From £2,272

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A House Builder

Alan House

Work is always carried out on time , clean & tidy

From £2,448

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REPAIR CRAFT CONSTRUCTION

REPAIR CRAFT CONSTRUCTION is a trusted extension builder serving customers in Alton and the surrounding area. Contact us to today to get a competit...

From £2,400

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RP Superstructures

Relax... you have found a reliable extension builder in Alton. RP Superstructures is a friendly and reliable company based in Alton who consider no...

RSJ cost in Alton

Estimates for install an rsj near Alton

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Alton it ranges from £2,104 (Vaughan Design and Development based in gu32) to £3,032 (CANADA BUILDERS & ROOFING LTD based in GU35).

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


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Estimates for common extension builder jobs in Alton;

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...