Cost to fit an RSJ in N8

Install an RSJ cost in N8 - Sort by rates or availability

RSJ cost in N8

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in N8 it ranges from £1,728 (Bellator Construction Ltd based in N11) to £2,600 (Five Star Builder based in N16).

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 N8 by posting a job with HaMuch and we will send it to extension builders in N8.

"RSJ re-installation" - N16, job posted 04/10/25

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Estimates for common extension builder jobs in N8;

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.