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 £2,608

Last active Oct 26
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Jon Howard Construction Ltd

Jon Howard Construction Ltd is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a compe...

From £5,352

Last active Oct 26
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Essex loft extensions Ltd

Colin

Location

Harlow, CM20

We are small building company working for the residential and domestic properties? We work on all types of buildings creating Loft conversion and H...

From £2,600

Last active Aug 26
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D C Salsbury Builders

D C Salsbury Builders is an established and experienced local extension builder in Harlow. Please contact us for a free, no obligation quote and co...

From £2,184

Last active Aug 26
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All Roofing & Guttering

Experienced extension builder ready to quote for your work. All Roofing & Guttering is the best extension builder in Harlow. No obligation free quo...

From £2,112

Last active May 26
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J G BUILDING SERVICES

J G BUILDING SERVICES is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a competitive...

From £2,224

Last active May 26
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Nevill Design & Build

Dan Nevill

Nevill Design & Build specialises in high-quality house extensions, loft conversions, structural alterations, and full refurbishments. We’ve deli...

From £2,624

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Hopson Bros Services

Hopson Bros Services is a trusted extension builder serving customers in Harlow and the surrounding area. Contact us to today to get a competitive ...

From £2,424

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Groome & Sons Ltd

Experienced extension builder ready to quote for your work. Groome & Sons Ltd is the best extension builder in Harlow. No obligation free quotes an...

From £2,584

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D E BRACKEN BUILDING SERVICES

D E BRACKEN BUILDING SERVICES is an established and experienced local extension builder in Harlow. Please contact us for a free, no obligation quot...

From £2,368

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Mmaes Limited

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

RSJ cost in Harlow

Estimates for install an rsj near Harlow

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Harlow it ranges from £2,112 (J G BUILDING SERVICES based in CM19) to £5,352 (Essex loft extensions Ltd based in CM20).

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


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Estimates for common extension builder jobs in Harlow;

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...