Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.67 (9 reviews)

Find affordable KT5 extension builders now

Extension builders rates in KT5 range from £33/hour £237/day (D A P CONSTRUCTION) to £50/hour £313/day (V&Co.). To see prices and availability now for your job click green button.

HaMuch is Excellent

How HaMuch saves you money

Post your job for free

We send your job to ALL KT5 extension builders

Compare quotes

Available extension builders in KT5 reply

Save Money

Select your affordable KT5 extension builder

Post your job

Sort by

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

"Extension single room" - KT9, job posted 26/07/26

"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

"Infill extension and movement of toilet" - KT7, job posted 21/05/25

"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 KT5

Use these steps to find Extension Builders in KT5 for FREE!

Post your job: Click "Get quotes" and briefly describe your job.
Enter your details: We’ll match you with Extension Builders in KT5. 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 KT5 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 Surbiton
Extension Builders in Long Ditton
Extension Builders in Kingston Upon Thames
Extension Builders in New Malden
Extension Builders in Coombe
Extension Builders in Thames Ditton
Extension Builders in Chessington
Extension Builders in Worcester Park
Extension Builders in Richmond Upon Thames
Extension Builders in Horton

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 - £26,176

Garden office - £10,176

Granny annexe - £87,176

Build a flat roof extension - £22,176

Convert a Garage - £16,176

Hip to gable loft conversion - £42,176

Convert a bungalow loft - £29,176

Build a dormer loft conversion - £42,176

Build a swimming pool - £81,176

Build a Mansard loft conversion - £52,176

Concrete foundations - £6,426

Underpin a building - £17,676

Two storey extension - £88,264

Convert a basement - £39,480

Side return extension - £43,480

Loft conversion - £35,400

Garage - £18,676

Single storey extension - £58,520

Outbuilding - £10,176

Install an RSJ - £2,376

Build a kitchen extension - £42,176

More extensions & conversions cost guides...

People in KT5 searching for a Extension Builder also viewed...

Painter and Decorator

The Largest Database of UK Trade Rates

At HaMuch we know what tradespeople charge because we have the largest database of rates anywhere in the UK. If you want quotes for jobs at the right price for you, post your jobs with HaMuch and get your home improvements kickstarted straight away!

Appliance Repair Specialist

Conservatory Specialist