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 £2,224

Last active Nov 26
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SH Enterprise

Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...

From £2,384

Last active Nov 26
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QA's Pointing and Brick Repair

QA's Pointing Brick Repair

Relax... you have found a reliable extension builder in Lambeth. QA's Pointing and Brick Repair is a friendly and reliable company based in Lambeth...

From £2,392

Last active Oct 26

1 review

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Torrington

Torrington Design

NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...

"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO

From £2,256

Last active Oct 26
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The Perfectionist

Experienced extension builder ready to quote for your work. The Perfectionist is the best extension builder in Lambeth. No obligation free quotes a...

From £2,520

Last active Sep 26
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D & G Building & Decorating

Experienced extension builder ready to quote for your work. D & G Building & Decorating is the best extension builder in Lambeth. No obligation fre...

From £2,576

Last active Sep 26
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CK Constructions & Development Ltd

CK Constructions & Development Ltd is a trusted extension builder serving customers in Lambeth and the surrounding area. Contact us to today to get...

From £2,176

Last active Sep 26
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A to Z Builders Ltd

A to Z Builders Ltd are here to help customers who need an Extension Builder in Lambeth. We offer a competitive rate to complete all your extension...

From £2,448

Last active Sep 26
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Cornerstones Construction

Experienced extension builder ready to quote for your work. Cornerstones Construction is the best extension builder in Lambeth. No obligation free ...

From £2,184

Last active Sep 26
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JK Doors

JK Doors is a trusted extension builder serving customers in Lambeth and the surrounding area. Contact us to today to get a competitive quote for e...

From £2,240

Last active Sep 26
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JM Building Services

JM Building Services is a trusted extension builder serving customers in Lambeth and the surrounding area. Contact us to today to get a competitive...

RSJ cost in Lambeth

Estimates for install an rsj near Lambeth

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Lambeth it ranges from £2,176 (A to Z Builders Ltd based in SW1P) to £2,576 (CK Constructions & Development Ltd based in WC1N).

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


Estimates for common extension builder jobs in Lambeth;

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...