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Need an Extension Builder in Chislehurst? RJC BUILDING SERVICES has been helping local clients (10 mile radius) with their extension buildering job...
Experienced extension builder ready to quote for your work. NA Brickwork is the best extension builder in Chislehurst. No obligation free quotes an...
Need to find an Extension Builder near you for all your extension buildering work?
Master Builders provides a local, trusted extension buil...
Curtis Archer
Relax... you have found a reliable extension builder in Chislehurst. POVERSET BUILDING COMPANY is a friendly and reliable company based in Chislehu...
Julian Cafun
Need an Extension Builder in Chislehurst? Saintflexs has been helping local clients (10 mile radius) with their extension buildering jobs for many...
Need to find an Extension Builder near you for all your extension buildering work?
AMJAC CONSTRUCTION LTD provides a local, trusted extensi...
AAB Tile Installation & Repairs are here to help customers who need an Extension Builder in Chislehurst. We offer a competitive rate to complete al...
Pro-Tec Roofing & Building Services Ltd is an established and experienced local extension builder in Chislehurst. Please contact us for a free, no ...
Experienced extension builder ready to quote for your work. Aumosa Ltd is the best extension builder in Chislehurst. No obligation free quotes and ...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Chislehurst it ranges from £2,064 (RJC BUILDING SERVICES based in BR5) to £2,576 (Saintflexs based in BR1).
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 Chislehurst by posting a job with HaMuch and we will send it to extension builders in Chislehurst.
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 - £17,619

Two storey extension - £88,179

Build a timber frame extension - £26,119

Build a swimming pool - £81,119

Single storey extension - £57,384

Side return extension - £42,841

Install an RSJ - £2,319

Outbuilding - £10,119

Build a Mansard loft conversion - £52,119

Loft conversion - £34,868

Build a kitchen extension - £42,119

Hip to gable loft conversion - £42,119

Granny annexe - £87,119

Garden office - £10,119

Convert a Garage - £16,119

Garage - £18,619

Build a flat roof extension - £22,119

Build a dormer loft conversion - £42,119

Concrete foundations - £6,369

Convert a bungalow loft - £29,119

Convert a basement - £38,841