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SDS Constructions
Sean Smithers
Our building services company SDS Constructions has been established for many years and have been providing customers in Dagenham and the surroundi...
Optimus Build Solutions
Vasile Boghean
Optimus Build Solutions delivers exceptional construction services in London and surronding areas. Specializing in bathroom and kitchen refurbishme...
From £21,880
Can design and Construction
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...
PHOENIX DEVELOPMNTS LONDON LTD
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in Becontree Heath. No obligation free quotes and ...
Tony Rutter
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
Decorating Building Service are here to help customers who need an Extension Builder in Becontree Heath. We offer a competitive rate to complete al...
Sevcan Construction
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
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...
RTC Plumbers
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...
Flat roof extension cost in Becontree Heath
A flat roof extension ranges from the cheapest of £21,416 (RTC Plumbers based in RM6) to the dearest of £23,232 (Optimus Build Solutions based in Rm1), but these are just estimates. While they give you an idea of who will be better value, the best way to compare costs is to get real quotes.
Find out how much your flat roof extension will cost in Becontree Heath by posting a job with HaMuch. We'll send it to extension builders in Becontree Heath.
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Estimates for common extension builder jobs in Becontree Heath;
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