Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.71 (7 reviews)

Find affordable KT2 extension builders now

Extension builders rates in KT2 range from £38/hour £237/day (WILDE BUILDING CONTRACTORS LTD) to £49/hour £307/day (Aranstruct). 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

"Build a brick outbuilding, 24ft by 14ft including folding doors. Usage is for gym and office." - KT5, job posted 01/05/26

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

"Loft conversion" - SURBITON, job posted 11/04/25

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

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

"Two Storey Extension plans approved, must be high end builder." - KT2, job posted 01/07/24

Quickly find an Extension Builder in KT2

Use these steps to find Extension Builders in KT2 for FREE!

Post your job: Click "Get quotes" and briefly describe your job.
Enter your details: We’ll match you with Extension Builders in KT2. We’ll notify you via text or email when an Extension Builder is available to quote.
Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local KT2 Extension Builders or phone them directly - you’re in control!

Local Extension Builders in London Boroughs

Local Extension Builders in London Boroughs
Borough in London
Extension Builders in Coombe
Extension Builders in Kingston Upon Thames
Extension Builders in Surbiton
Extension Builders in New Malden
Extension Builders in Long Ditton
Extension Builders in Richmond Upon Thames
Extension Builders in Teddington
Extension Builders in Ham
Extension Builders in Thames Ditton
Extension Builders in Merton

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 - £26,152

Garden office - £10,152

Granny annexe - £87,152

Build a flat roof extension - £22,152

Convert a Garage - £16,152

Hip to gable loft conversion - £42,152

Convert a bungalow loft - £29,152

Build a dormer loft conversion - £42,152

Build a swimming pool - £81,152

Build a Mansard loft conversion - £52,152

Concrete foundations - £6,402

Underpin a building - £17,652

Two storey extension - £88,228

Convert a basement - £39,210

Side return extension - £43,210

Loft conversion - £35,175

Garage - £18,652

Single storey extension - £58,040

Outbuilding - £10,152

Install an RSJ - £2,352

Build a kitchen extension - £42,152

More extensions & conversions cost guides...

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