From £2,168
Kaizer Berg Ltd is an established and experienced local extension builder in Thurrock. Please contact us for a free, no obligation quote and compet...
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 £2,064
Trusted and professional extension builder in Thurrock. Experienced in all extension buildering work and keeping within budget and on quote. Access...
From £2,528
Trusted and professional extension builder in Thurrock. Experienced in all extension buildering work and keeping within budget and on quote. PALMER...
From £2,576
C & B Multi-Trader is an established extension buildering business in Thurrock. We come highly recommended and provide competitive quotes for your ...
From £2,128
Relax... you have found a reliable extension builder in Thurrock. SC SMITH BUILDING CONTRACTORS is a friendly and reliable company based in Thurroc...
From £2,144
Experienced extension builder ready to quote for your work. Keith Andrews Building is the best extension builder in Thurrock. No obligation free qu...
From £2,136
Experienced extension builder ready to quote for your work. Renewvate is the best extension builder in Thurrock. No obligation free quotes and many...
From £2,296
FLEX CONSTRUCTION LIMITED are here to help customers who need an Extension Builder in Thurrock. We offer a competitive rate to complete all your ex...
From £2,296
Experienced extension builder ready to quote for your work. Deen Construction & Renovations Ltd is the best extension builder in Thurrock. No oblig...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thurrock it ranges from £2,064 (Access Builders Direct LTD based in RM17) to £2,576 (C & B Multi-Trader 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 Thurrock by posting a job with HaMuch and we will send it to extension builders in Thurrock.
"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 - £17,574

Two storey extension - £88,112

Build a timber frame extension - £26,074

Build a swimming pool - £81,074

Single storey extension - £56,488

Side return extension - £42,337

Install an RSJ - £2,274

Outbuilding - £10,074

Build a Mansard loft conversion - £52,074

Loft conversion - £34,448

Build a kitchen extension - £42,074

Hip to gable loft conversion - £42,074

Granny annexe - £87,074

Garden office - £10,074

Convert a Garage - £16,074

Garage - £18,574

Build a flat roof extension - £22,074

Build a dormer loft conversion - £42,074

Concrete foundations - £6,324

Convert a bungalow loft - £29,074

Convert a basement - £38,337