Cost to fit an RSJ in N15

Install an RSJ cost in N15 - Sort by rates or availability

RSJ cost in N15

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in N15 it ranges from £1,800 (ADD CONSTRUCTION (LONDON) LTD based in N15) 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 N15 by posting a job with HaMuch and we will send it to extension builders in N15.

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

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Estimates for common extension builder jobs in N15;

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.