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From £32,625
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 IG1. No obligation free quotes and many happy c...
Decorating Building Service
Decorating Building Service are here to help customers who need an Extension Builder in IG1. We offer a competitive rate to complete all your exten...
From £35,400
Fedora and sons Ltd
MIHAI Martolea
Member since September 2026
Fedora and sons Ltd is a trusted extension builder serving customers in IG1 and the surrounding area. Contact us to today to get a competitive quot...
M & S Builders
Ilford, IG1
M & S Builders is a trusted extension builder serving customers in IG1 and the surrounding area. Contact us to today to get a competitive quote for...
B J CULLEN BUILDERS
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in IG1. We offer a competitive rate to complete all your extension bui...
Major Building Contractors Ltd
Relax... you have found a reliable extension builder in IG1. Major Building Contractors Ltd is a friendly and reliable company based in IG1 who con...
Sz Builders
Need to find an Extension Builder near you for all your extension buildering work?
Sz Builders provides a local, trusted extension builderi...
Jhon
Ilford, IG1
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in IG1. No obligation free quotes and many happy cus...
CREATIVE BUILDING SOLUTIONS
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Cheapest builders for loft conversion in IG1
Comparing extension builders estimates for Loft conversion 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 of a loft conversion in IG1 by posting your job to extension builders in IG1.
"Loft conversion" - MANOR PARK, job posted 01/01/70
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Estimates for common extension builder jobs in IG1;
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 - £17,626
Two storey extension - £88,190
Build a timber frame extension - £26,126
Build a swimming pool - £81,126
Single storey extension - £57,528
Side return extension - £42,922
Install an RSJ - £2,326
Outbuilding - £10,126
Build a Mansard loft conversion - £52,126
Loft conversion - £34,935
Build a kitchen extension - £42,126
Hip to gable loft conversion - £42,126
Granny annexe - £87,126
Garden office - £10,126
Convert a Garage - £16,126
Garage - £18,626
Build a flat roof extension - £22,126
Build a dormer loft conversion - £42,126
Concrete foundations - £6,376
Convert a bungalow loft - £29,126
Convert a basement - £38,922