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. 

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Install an RSJ cost in Knockmenagh

Power Construction

From £1,560

Power Construction is an established and experienced local extension builder in Knockmenagh. Please contact us for a free, no obligation quote and ...

The Method Group

From £1,648

Trusted and professional extension builder in Knockmenagh. Experienced in all work and keeping within budget and on quote. The Method Group have m...

Terry Design

From £1,736

Experienced extension builder ready to quote for your work. Terry Design is the best extension builder in Knockmenagh. No obligation free quotes an...

R.J Builders

From £1,504

R.J Builders are here to help customers who need an Extension Builder in Knockmenagh. We offer a competitive rate to complete all your jobs to pro...

G K Contracts Building & Joinery

From £1,840

With extensive experience, we provide reliable, high-quality workmanship at competitive prices. G K Contracts Building & Joinery understands the i...

T.I Building

From £1,600

T.I Building is a trusted extension builder serving customers in Knockmenagh and the surrounding area. Contact us to today to get a competitive quo...

Finch Construction NI

From £1,584

Relax... you have found a reliable extension builder in Knockmenagh. Finch Construction NI is a friendly and reliable company based in Knockmenagh ...

JP&S Construction Ltd

From £1,984

JP&S Construction Ltd is an established business in Knockmenagh. We come highly recommended and provide competitive quotes for your work.

Belfast Loft Company

From £1,536

Trusted and professional extension builder in Knockmenagh. Experienced in all work and keeping within budget and on quote. Belfast Loft Company ha...

GMC Construction

From £2,216

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

GMC Construction provides a local, trusted service in and around Knockmenag...

RSJ cost in Knockmenagh

Estimates for install an rsj near Knockmenagh

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Knockmenagh it ranges from £1,504 (R.J Builders based in BT67) to £2,216 (GMC Construction based in BT70).

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


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Estimates for common extension builder jobs in Knockmenagh;

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...