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Select your affordable WD5 extension builder
J Pellow & Son Ltd are here to help customers who need an Extension Builder in WD5. We offer a competitive rate to complete all your extension buil...
From £2,640
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,616
M DUNNE BUILDER is a trusted extension builder serving customers in WD5 and the surrounding area. Contact us to today to get a competitive quote fo...
From £2,264
Trusted and professional extension builder in WD5. Experienced in all extension buildering work and keeping within budget and on quote. Total Refur...
From £2,288
Abbots Langley, WD5
Need an Extension Builder in WD5? PM HOBBS BUILDING SERVICES has been helping local clients (10 mile radius) with their extension buildering jobs f...
From £2,640
Need to find an Extension Builder near you for all your extension buildering work?
Rob Higgs Building & Carpentry provides a local, trusted...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WD5 it ranges from £2,264 (Total Refurbishment & Build based in WD4) to £2,640 (Evolved Glazing Solutions Limited based in HP3).
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 WD5 by posting a job with HaMuch and we will send it to extension builders in WD5.
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 - £17,760

Two storey extension - £88,390

Build a timber frame extension - £26,260

Build a swimming pool - £81,260

Single storey extension - £60,200

Side return extension - £44,425

Install an RSJ - £2,460

Outbuilding - £10,260

Build a Mansard loft conversion - £52,260

Loft conversion - £36,188

Build a kitchen extension - £42,260

Hip to gable loft conversion - £42,260

Granny annexe - £87,260

Garden office - £10,260

Convert a Garage - £16,260

Garage - £18,760

Build a flat roof extension - £22,260

Build a dormer loft conversion - £42,260

Concrete foundations - £6,510

Convert a bungalow loft - £29,260

Convert a basement - £40,425