From £2,120
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in RM16. We offer a competitive rate to complete all your...
From £2,384
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in RM16. No obligation free quotes and ...
From £2,392
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £2,512
skilled worker who specializes in completing a wide range of building and renovation projects
From £2,816
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in RM16 and the surrounding area. Contact us to today to get a com...
From £2,400
Relax... you have found a reliable extension builder in RM16. Derryard Construction Ltd is a friendly and reliable company based in RM16 who consid...
From £2,168
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in RM16. We offer a competitive rate to complete all your extension bu...
From £2,232
Relax... you have found a reliable extension builder in RM16. Major Building Contractors Ltd is a friendly and reliable company based in RM16 who c...
From £2,384
Need to find an Extension Builder near you for all your extension buildering work?
Sz Builders provides a local, trusted extension builderi...
From £2,912
Experienced extension builder ready to quote for your work. Render is the best extension builder in RM16. No obligation free quotes and many happy ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RM16 it ranges from £2,120 (Masonic Plumbing and Heating Ltd based in BR2) to £2,912 (Render based in IG1).
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 RM16 by posting a job with HaMuch and we will send it to extension builders in RM16.
"RSJ installation across a 5 metre section of rear wall." - CHAFFORD HUNDRED, job posted 01/01/70
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.

Underpin a building - £17,732

Two storey extension - £88,348

Build a timber frame extension - £26,232

Build a swimming pool - £81,232

Single storey extension - £59,640

Side return extension - £44,110

Install an RSJ - £2,432

Outbuilding - £10,232

Build a Mansard loft conversion - £52,232

Loft conversion - £35,925

Build a kitchen extension - £42,232

Hip to gable loft conversion - £42,232

Granny annexe - £87,232

Garden office - £10,232

Convert a Garage - £16,232

Garage - £18,732

Build a flat roof extension - £22,232

Build a dormer loft conversion - £42,232

Concrete foundations - £6,482

Convert a bungalow loft - £29,232

Convert a basement - £40,110