Tommy House
HOUSE BUILDING SERVICES LIMITED is a trusted extension builder serving customers in DA6 and the surrounding area. Contact us to today to get a comp...
Lover Build is an established and experienced local extension builder in DA6. Please contact us for a free, no obligation quote and competitive rat...
Pedro
Need an Extension Builder in DA6? Danni Building Services Ltd has been helping local clients (10 mile radius) with their extension buildering jobs ...
R Tredget & Son are here to help customers who need an Extension Builder in DA6. We offer a competitive rate to complete all your extension builder...
Gary Woolcombe
Welling, DA6
I am an experienced builder, I jave been in the building game since I left college after doing a 2 year bricklaying apprenticeship.
I ha...
Thomas Ingram
Experienced extension builder ready to quote for your work. Ingram Building and Electrical Contractors LIMTED is the best extension builder in DA6....
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,512
Need to find an Extension Builder near you for all your extension buildering work?
Liam Kinsella Ltd provides a local, trusted extension bu...
From £2,288
Need an Extension Builder in DA6? NEW BUILD MAINTENANCE LTD has been helping local clients (10 mile radius) with their extension buildering jobs fo...
From £2,184
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 DA6 it ranges from £2,184 (Bex Building Services based in DA8) to £2,816 (HOUSE BUILDING SERVICES LIMITED based in DA16).
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 DA6 by posting a job with HaMuch and we will send it to extension builders in DA6.
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 - £17,731

Two storey extension - £88,347

Build a timber frame extension - £26,231

Build a swimming pool - £81,231

Single storey extension - £59,624

Side return extension - £44,101

Install an RSJ - £2,431

Outbuilding - £10,231

Build a Mansard loft conversion - £52,231

Loft conversion - £35,918

Build a kitchen extension - £42,231

Hip to gable loft conversion - £42,231

Granny annexe - £87,231

Garden office - £10,231

Convert a Garage - £16,231

Garage - £18,731

Build a flat roof extension - £22,231

Build a dormer loft conversion - £42,231

Concrete foundations - £6,481

Convert a bungalow loft - £29,231

Convert a basement - £40,101