Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.78 (9 reviews)

Find affordable RM12 extension builders now

Extension builders rates in RM12 range from £38/hour £237/day (Chris Adams Pebbledashing) to £53/hour £384/day (Smiths Property Maintenance). To see prices and availability now for your job click green button.

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"Loft conversion" - HORNCHURCH, job posted 09/08/26

"Looking for job underpinning" - RM10, job posted 23/07/25

"10 years experience construction" - RM10, job posted 02/05/25

"Hi looking for job I can just underpin in garden" - RM10, job posted 02/05/25

"Swimming pool" - EMERSON PARK, job posted 30/04/25

"Loft conversion" - HORNCHURCH, job posted 21/03/25

"Underpinning Look for job underpinning My name oli call me 0750 711x xx" - RM10, job posted 24/01/25

"Loft conversion for mid terrace house with heating, windows and enquire bathroom" - RM1, job posted 20/10/24

"Side return extension" - RM10, job posted 07/01/24

Quickly find an Extension Builder in RM12

Use these steps to find Extension Builders in RM12 for FREE!

Post your job: Click "Get quotes" and briefly describe your job.
Enter your details: We’ll match you with Extension Builders in RM12. 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 RM12 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 Hornchurch
Extension Builders in Emerson Park
Extension Builders in Rainham
Extension Builders in Gidea Park
Extension Builders in Dagenham
Extension Builders in Rush Green
Extension Builders in Romford
Extension Builders in Upminster
Extension Builders in Becontree
Extension Builders in Becontree Heath

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 - £26,192

Garden office - £10,192

Granny annexe - £87,192

Build a flat roof extension - £22,192

Convert a Garage - £16,192

Hip to gable loft conversion - £42,192

Convert a bungalow loft - £29,192

Build a dormer loft conversion - £42,192

Build a swimming pool - £81,192

Build a Mansard loft conversion - £52,192

Concrete foundations - £6,442

Underpin a building - £17,692

Two storey extension - £88,288

Convert a basement - £39,660

Side return extension - £43,660

Loft conversion - £35,550

Garage - £18,692

Single storey extension - £58,840

Outbuilding - £10,192

Install an RSJ - £2,392

Build a kitchen extension - £42,192

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