From £2,248
Experienced extension builder ready to quote for your work. J&J Building Solutions is the best extension builder in EN2. No obligation free quotes ...
From £2,248
Trusted and professional extension builder in EN2. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
From £2,592
Need an Extension Builder in EN2? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £2,120
Masonic Plumbing and Heating Ltd are here to help customers who need an Extension Builder in EN2. 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 EN2. No obligation free quotes and m...
From £2,512
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,760
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
From £2,296
Experienced extension builder ready to quote for your work. Mr is the best extension builder in EN2. No obligation free quotes and many happy custo...
From £2,184
JK Doors is a trusted extension builder serving customers in EN2 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £2,392
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in EN2 it ranges from £2,120 (Masonic Plumbing and Heating Ltd based in BR2) to £2,760 (Rafix Building based in EN4).
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 EN2 by posting a job with HaMuch and we will send it to extension builders in EN2.
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 - £17,674

Two storey extension - £88,260

Build a timber frame extension - £26,174

Build a swimming pool - £81,174

Single storey extension - £58,472

Side return extension - £43,453

Install an RSJ - £2,374

Outbuilding - £10,174

Build a Mansard loft conversion - £52,174

Loft conversion - £35,378

Build a kitchen extension - £42,174

Hip to gable loft conversion - £42,174

Granny annexe - £87,174

Garden office - £10,174

Convert a Garage - £16,174

Garage - £18,674

Build a flat roof extension - £22,174

Build a dormer loft conversion - £42,174

Concrete foundations - £6,424

Convert a bungalow loft - £29,174

Convert a basement - £39,453