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Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
From £9,880
Erald Kanani
Member since August 2025
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Experienced extension builder ready to quote for your work. Render is the best extension builder in Becontree Heath. No obligation free quotes and ...
Need an Extension Builder in Becontree Heath? Tony Rutter has been helping local clients (10 mile radius) with their extension buildering jobs for ...
Decorating Building Service are here to help customers who need an Extension Builder in Becontree Heath. We offer a competitive rate to complete al...
Relax... you have found a reliable extension builder in Becontree Heath. Sevcan Construction is a friendly and reliable company based in Becontree ...
Kunshi Services UK Ltd is a trusted extension builder serving customers in Becontree Heath and the surrounding area. Contact us to today to get a c...
Shaik Jamal
Welcome to RTC Plumbers! With over 15 years of experience, we offer a range of plumbing services from simple repairs to complex installations, each...

Outbuilding costs in Becontree Heath range from the cheapest of £9,416 (RTC Plumbers based in RM6) to the dearest of £11,232 (Optimus Build Solutions based in Rm1), but these are just estimates.
Comparing extension builders estimates for building an outbuilding 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 build an outbuilding in Becontree Heath by posting a job with HaMuch and we will send it to extension builders.
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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 - £17,777

Two storey extension - £88,415

Build a timber frame extension - £26,277

Build a swimming pool - £81,277

Single storey extension - £60,536

Side return extension - £44,614

Install an RSJ - £2,477

Outbuilding - £10,277

Build a Mansard loft conversion - £52,277

Loft conversion - £36,345

Build a kitchen extension - £42,277

Hip to gable loft conversion - £42,277

Granny annexe - £87,277

Garden office - £10,277

Convert a Garage - £16,277

Garage - £18,777

Build a flat roof extension - £22,277

Build a dormer loft conversion - £42,277

Concrete foundations - £6,527

Convert a bungalow loft - £29,277

Convert a basement - £40,614