Cost to fit an RSJ in TW9

RSJ cost in TW9

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in TW9 it ranges from £2,096 (RAF Construction Solutions based in TW8) to £2,648 (RAID Architecture based in TW8).

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 TW9 by posting a job with HaMuch and we will send it to extension builders in TW9.

"UC beam install 2.5m only (calculations done, building control notification done, no pretty boxing etc.)" - TW8, job posted 03/09/26

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Borough in London
Install An RSJ in Kew
Install An RSJ in Mortlake
Install An RSJ in Ham
Install An RSJ in Brentford
Install An RSJ in Osterley
Install An RSJ in Twickenham
Install An RSJ in Chiswick
Install An RSJ in Barnes
Install An RSJ in Strawberry Hill
Install An RSJ in Hounslow

Estimates for common extension builder jobs in TW9;

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.