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We Fix & Upkeep Ltd
Cosmin-Adrian Aporcariti
Chertsey, KT16
We are a company based in South London, with a strong will to work and to do the best job possible every tine we start a job (big or small) because...
GS Wood Building Services
Need to find an Extension Builder near you for all your extension buildering work?
GS Wood Building Services provides a local, trusted exte...
£45/hr
£287/day
London Rated Roofing
Chertsey, KT16
Relax... you have found a reliable extension builder in KT16. London Rated Roofing is a friendly and reliable company based in KT16 who consider no...
£23/hr
£209/day
Inspiral Construction
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£42/hr
£267/day
EcoWoodDesign
EcoWoodDesign are here to help customers who need an Extension Builder in KT16. We offer a competitive rate to complete all your extension builderi...
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Local Extension Builders in London Boroughs
Job estimates from extension builders near you
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.

Build a timber frame extension - £25,976

Garden office - £9,976

Granny annexe - £86,976

Build a flat roof extension - £21,976

Convert a Garage - £15,976

Hip to gable loft conversion - £41,976

Convert a bungalow loft - £28,976

Build a dormer loft conversion - £41,976

Build a swimming pool - £80,976

Build a Mansard loft conversion - £51,976

Concrete foundations - £6,226

Underpin a building - £17,476

Two storey extension - £87,964

Convert a basement - £37,230

Side return extension - £41,230

Loft conversion - £33,525

Garage - £18,476

Single storey extension - £54,520

Outbuilding - £9,976

Install an RSJ - £2,176

Build a kitchen extension - £41,976
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