From £2,328
R B Building Services are here to help customers who need an Extension Builder in Becontree. We offer a competitive rate to complete all your exten...
From £2,568
Becontree, RM9
Need an Extension Builder in Becontree? MONOLITH CONSTRUCTION LTD has been helping local clients (10 mile radius) with their extension buildering j...
From £2,328
Relax... you have found a reliable extension builder in Becontree. R & K Builders is a friendly and reliable company based in Becontree who conside...
From £2,520
Becontree Dagenham, RM9
Vito Construction and Maintenance are here to help customers who need an Extension Builder in Becontree. We offer a competitive rate to complete al...
From £2,216
Relax... you have found a reliable extension builder in Becontree. Arysab Ltd is a friendly and reliable company based in Becontree who consider no...
From £2,544
Buildem Ltd is a trusted extension builder serving customers in Becontree and the surrounding area. Contact us to today to get a competitive quote ...
From £2,512
We provide our clients with excellent service and quality. Whether you are looking extend or upgrade, our professional team have the skills and ex...
From £2,224
Need an Extension Builder in Becontree? Orrys Shop has been helping local clients (10 mile radius) with their extension buildering jobs for many ye...
From £2,136
Carpeting, Furniture Assembly, Landscaping, Painting, Flooring
From £2,264
AV Builders London Limited is a trusted extension builder serving customers in Becontree and the surrounding area. Contact us to today to get a com...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Becontree it ranges from £2,136 (Crafman Building & landscaping LTD based in RM8) to £2,568 (MONOLITH CONSTRUCTION LTD based in RM9).
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 Becontree by posting a job with HaMuch and we will send it to extension builders in Becontree.
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 - £17,664

Two storey extension - £88,246

Build a timber frame extension - £26,164

Build a swimming pool - £81,164

Single storey extension - £58,280

Side return extension - £43,345

Install an RSJ - £2,364

Outbuilding - £10,164

Build a Mansard loft conversion - £52,164

Loft conversion - £35,288

Build a kitchen extension - £42,164

Hip to gable loft conversion - £42,164

Granny annexe - £87,164

Garden office - £10,164

Convert a Garage - £16,164

Garage - £18,664

Build a flat roof extension - £22,164

Build a dormer loft conversion - £42,164

Concrete foundations - £6,414

Convert a bungalow loft - £29,164

Convert a basement - £39,345