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From £36,150
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...
Render
Experienced extension builder ready to quote for your work. Render is the best extension builder in East Ham. No obligation free quotes and many ha...
Kunshi Services UK Ltd
Kunshi Services UK Ltd is a trusted extension builder serving customers in East Ham and the surrounding area. Contact us to today to get a competit...
From £39,480
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Fedora and sons Ltd is a trusted extension builder serving customers in East Ham and the surrounding area. Contact us to today to get a competitive...
CC&D BUILDING LTD
Catalin CIOBANU
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in East Ham. No obligation free quotes ...
M Saleem Builders
Relax... you have found a reliable extension builder in East Ham. M Saleem Builders is a friendly and reliable company based in East Ham who consid...
KS Plastering SERVICE
Sampson Essien
Thistle Bonding Coat: Ideal for use on low-suction backgrounds such as brick or concrete blocks, this product provided a solid foundation, Thi...
GNB Construction Builders Ltd
Trusted and professional extension builder in East Ham. Experienced in all extension buildering work and keeping within budget and on quote. GNB Co...
G HAMID CONSTRUCTION LTD
Relax... you have found a reliable extension builder in East Ham. G HAMID CONSTRUCTION LTD is a friendly and reliable company based in East Ham who...
Kaseno Group
Kaseno Group are here to help customers who need an Extension Builder in East Ham. We offer a competitive rate to complete all your extension build...
Cheapest builders to convert your basement in East Ham
Comparing extension builders estimates for a Convert a basement gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost to convert a basement in East Ham by posting a job with HaMuch and we will send it to extension builders in East Ham.
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Estimates for common extension builder jobs in East Ham;
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 - £17,669
Two storey extension - £88,253
Build a timber frame extension - £26,169
Build a swimming pool - £81,169
Single storey extension - £58,376
Side return extension - £43,399
Install an RSJ - £2,369
Outbuilding - £10,169
Build a Mansard loft conversion - £52,169
Loft conversion - £35,333
Build a kitchen extension - £42,169
Hip to gable loft conversion - £42,169
Granny annexe - £87,169
Garden office - £10,169
Convert a Garage - £16,169
Garage - £18,669
Build a flat roof extension - £22,169
Build a dormer loft conversion - £42,169
Concrete foundations - £6,419
Convert a bungalow loft - £29,169
Convert a basement - £39,399