Need to find an Extension Builder near you for all your extension buildering work?
ESK Builders provides a local, trusted extension builder...
Decorating Building Service are here to help customers who need an Extension Builder in IG3. We offer a competitive rate to complete all your exten...
Erald Kanani
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
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...
M & S Builders is a trusted extension builder serving customers in IG3 and the surrounding area. Contact us to today to get a competitive quote for...
Local Boiler Plumbing & Heating Services is an established and experienced local extension builder in IG3. Please contact us for a free, no obligat...
Seven Kings, IG3
B J CULLEN BUILDERS are here to help customers who need an Extension Builder in IG3. We offer a competitive rate to complete all your extension bui...
Relax... you have found a reliable extension builder in IG3. Major Building Contractors Ltd is a friendly and reliable company based in IG3 who con...
Need to find an Extension Builder near you for all your extension buildering work?
Sz Builders provides a local, trusted extension builderi...
Experienced extension builder ready to quote for your work. Render is the best extension builder in IG3. No obligation free quotes and many happy c...

Costs range from £87,124 (RTC Plumbers based in RM6) to £89,068 (Render based in IG1), but these are just estimates. The best way to compare costs is to get real quotes from real 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 - £17,619

Two storey extension - £88,179

Build a timber frame extension - £26,119

Build a swimming pool - £81,119

Single storey extension - £57,384

Side return extension - £42,841

Install an RSJ - £2,319

Outbuilding - £10,119

Build a Mansard loft conversion - £52,119

Loft conversion - £34,868

Build a kitchen extension - £42,119

Hip to gable loft conversion - £42,119

Granny annexe - £87,119

Garden office - £10,119

Convert a Garage - £16,119

Garage - £18,619

Build a flat roof extension - £22,119

Build a dormer loft conversion - £42,119

Concrete foundations - £6,369

Convert a bungalow loft - £29,119

Convert a basement - £38,841