Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.7 (5 reviews)

Find affordable Richmond Upon Thames extension builders now

Extension builders rates in Richmond Upon Thames range from £36/hour £237/day (Silver Horizon Installers Ltd) to £48/hour £307/day (TFC Construction). To see prices and availability now for your job click green button.

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"Granny annexe" - KINGSTON UPON THAMES, job posted 21/10/26

"Loft conversion of a small 3 bed end of terrace. Currently gang nail truss. Ending up with 3 velux to the front and a pitched dormer to the rear. Architect and engineer plans available." - WEST MOLESEY, job posted 08/09/25

"Single storey extension" - KT2, job posted 25/07/25

"Two storey extension" - KT2, job posted 16/02/25

"Loft conversion" - KINGSTON UPON THAMES, job posted 18/11/24

Quickly find an Extension Builder in Richmond Upon Thames

Use these steps to find Extension Builders in Richmond Upon Thames for FREE!

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Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Richmond Upon Thames Extension Builders or phone them directly - you’re in control!

Local Extension Builders in London Boroughs

Local Extension Builders in London Boroughs
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Extension Builders in Richmond Upon Thames
Extension Builders in Teddington
Extension Builders in Hampton
Extension Builders in West Molesey
Extension Builders in Kingston Upon Thames
Extension Builders in Thames Ditton
Extension Builders in Coombe
Extension Builders in Strawberry Hill
Extension Builders in Twickenham
Extension Builders in Long Ditton

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 - £26,168

Garden office - £10,168

Granny annexe - £87,168

Build a flat roof extension - £22,168

Convert a Garage - £16,168

Hip to gable loft conversion - £42,168

Convert a bungalow loft - £29,168

Build a dormer loft conversion - £42,168

Build a swimming pool - £81,168

Build a Mansard loft conversion - £52,168

Concrete foundations - £6,418

Underpin a building - £17,668

Two storey extension - £88,252

Convert a basement - £39,390

Side return extension - £43,390

Loft conversion - £35,325

Garage - £18,668

Single storey extension - £58,360

Outbuilding - £10,168

Install an RSJ - £2,368

Build a kitchen extension - £42,168

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