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. 

Install an RSJ cost in CW1 - Sort by rates or availability

From £1,808

(last active 02/10/26)
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R A C Gas

Richie Crawley

Relax... you have found a reliable extension builder in CW1. R A C Gas is a friendly and reliable company based in CW1 who consider no job as too b...

From £2,232

(last active 22/09/26)
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Tong Building & Joinery Ltd

Andy Tong

Tong Building & Joinery Ltd are here to help customers who need an Extension Builder in CW1. We offer a competitive rate to complete all your exten...

From £1,904

(last active 09/09/26)
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MIDDLETON CONSTRUCTION (NW)LTD

Need an Extension Builder in CW1? MIDDLETON CONSTRUCTION (NW)LTD has been helping local clients (20 mile radius) with their extension buildering jo...

From £1,968

(last active 09/09/26)
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A WALL BUILDING CONTRACTOR

A WALL BUILDING CONTRACTOR are here to help customers who need an Extension Builder in CW1. We offer a competitive rate to complete all your extens...

From £1,784

(last active 09/09/26)
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Matthew Hannigan Garage Doors

Experienced extension builder ready to quote for your work. Matthew Hannigan Garage Doors is the best extension builder in CW1. No obligation free ...

From £1,848

(last active 04/09/26)
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HMS Property

Dianne Poxon

We are a family run firm, established for 25,years

are work is first class

and we are here for any after care

only...

From £1,752

(last active 01/09/26)
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Amberwood Design

Richard Williamson

Trusted and professional extension builder in CW1. Experienced in all extension buildering work and keeping within budget and on quote. Amberwood D...

From £1,952

(last active 21/08/26)
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B B ROOFCARE LTD

B B ROOFCARE LTD is a trusted extension builder serving customers in CW1 and the surrounding area. Contact us to today to get a competitive quote f...

From £2,296

(last active 21/08/26)
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D & K BUILDING SERVICES T/A

D & K BUILDING SERVICES T/A is an established and experienced local extension builder in CW1. Please contact us for a free, no obligation quote and...

From £1,936

(last active 21/08/26)
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SJF Building Contractors

Experienced extension builder ready to quote for your work. SJF Building Contractors is the best extension builder in CW1. No obligation free quote...

RSJ cost in CW1

Estimates for install an rsj near CW1

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CW1 it ranges from £1,752 (Amberwood Design based in SK11) to £2,296 (D & K BUILDING SERVICES T/A based in ST6).

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 CW1 by posting a job with HaMuch and we will send it to extension builders in CW1.

"RSJ corrosion repair quote" - CREWE, job posted 07/08/25


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Estimates for common extension builder jobs in CW1;

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...