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 £2,816

Last active Oct 26
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HOUSE BUILDING SERVICES LIMITED

Tommy House

HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in SE18 and the surrounding area. Contact us to today to get a com...

From £2,288

Last active Sep 26
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AM Builder

Trusted and professional extension builder in SE18. Experienced in all extension buildering work and keeping within budget and on quote. AM Builder...

From £2,448

Last active Sep 26
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PFM General Building Services Ltd

Philip Boateg

Location

London, SE18

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

PFM General Building Services Ltd provides a local, trus...

From £2,720

Last active Sep 26
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JASPG Construction & Design

JASPG excel in finding investment opportunities, working together with clients and partners to achieve optimal results. We project manage from star...

From £2,120

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Keane & Sons Paving

Keane & Sons Paving is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote and compet...

From £2,104

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Builder.Special

Builder.Special is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote and competitiv...

From £2,160

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Satau Construction Works Ltd

Satau Construction Works Ltd is an established and experienced local extension builder in SE18. Please contact us for a free, no obligation quote a...

From £1,464

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Birdz Property Services

Zachary Bird

Birdz Property Services are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your extensio...

From £2,280

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D S J Building Contractors

D S J Building Contractors are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your exten...

From £2,280

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Dry Spell Builders

Dry Spell Builders are here to help customers who need an Extension Builder in SE18. We offer a competitive rate to complete all your extension bui...

RSJ cost in SE18

Estimates for install an rsj near SE18

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in SE18 it ranges from £1,464 (Birdz Property Services based in DA16) to £2,816 (HOUSE BUILDING SERVICES LIMITED based in DA16).

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 SE18 by posting a job with HaMuch and we will send it to extension builders in SE18.


Estimates for common extension builder jobs in SE18;

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...