From £2,464
Essex, RM15
Our building services company Vitec Interiors Ltd have over twenty-eight years’ experience in the trade. Since then we have been helping customer...
From £2,512
Nik&Jel Services Ltd is registered member of the Federation of Master Builders, offer high quality and professional construction services, performi...
From £2,592
The England Team is an established extension buildering business in RM15. We come highly recommended and provide competitive quotes for your work.<...
From £2,208
Experienced extension builder ready to quote for your work. Casa building services Ltd is the best extension builder in RM15. No obligation free qu...
From £2,472
L A CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in RM15. We offer a competitive rate to complete all your extensi...
From £2,400
LRB general LTD is a trusted extension builder serving customers in RM15 and the surrounding area. Contact us to today to get a competitive quote f...
From £2,392
We are LRB General LTD and we would like to get to know you a bit better. Right, so we go first.We’ve been in the construction and renovation ind...
From £2,408
Our building services company MCM Building Services Limited has been helping customers in Essex and the surrounding area by providing professional,...
From £2,136
Experienced extension builder ready to quote for your work. Renewvate is the best extension builder in RM15. No obligation free quotes and many hap...
From £2,296
FLEX CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in RM15. We offer a competitive rate to complete all your extens...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in RM15 it ranges from £2,136 (Renewvate based in RM17) to £2,592 (The England Team based in RM16).
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 RM15 by posting a job with HaMuch and we will send it to extension builders in RM15.
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 - £17,688

Two storey extension - £88,282

Build a timber frame extension - £26,188

Build a swimming pool - £81,188

Single storey extension - £58,760

Side return extension - £43,615

Install an RSJ - £2,388

Outbuilding - £10,188

Build a Mansard loft conversion - £52,188

Loft conversion - £35,513

Build a kitchen extension - £42,188

Hip to gable loft conversion - £42,188

Granny annexe - £87,188

Garden office - £10,188

Convert a Garage - £16,188

Garage - £18,688

Build a flat roof extension - £22,188

Build a dormer loft conversion - £42,188

Concrete foundations - £6,438

Convert a bungalow loft - £29,188

Convert a basement - £39,615