Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.64 (7 reviews)

Find affordable IG1 extension builders now

Extension builders rates in IG1 range from £37/hour £235/day (Can design and Construction ) to £49/hour £339/day (Essex Building Construction). To see prices and availability now for your job click green button.

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"Outbuilding" - IG5, job posted 17/05/26

"Loft conversion" - SEVEN KINGS, job posted 23/01/26

"Side return extension" - REDBRIDGE, job posted 08/11/25

"Granny annexe" - REDBRIDGE, job posted 01/10/25

"I need to repair bays as its crumbling I don't know how to describe if you come and see what I mean. Avtar" - E12, job posted 24/08/24

"Loft conversion" - MANOR PARK, job posted 26/06/24

"Basement Conversion Quote: Terraced house with a 25m2 basement(2rooms,existing head Ht 2.2m). 2.4m required Ht. Part One: To lower the floor and possibly concrete support walls instead of underpinning.Possible front stair access. Part Two: existing dining room + side alley way 35m2, to dig and..." - E7, job posted 18/09/23

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Post your job: Click "Get quotes" and briefly describe your job.
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Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local IG1 Extension Builders or phone them directly - you’re in control!

Local Extension Builders in London Boroughs

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Extension Builders in Barking
Extension Builders in Clayhill
Extension Builders in Forest Gate
Extension Builders in East Ham

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 - £26,160

Garden office - £10,160

Granny annexe - £87,160

Build a flat roof extension - £22,160

Convert a Garage - £16,160

Hip to gable loft conversion - £42,160

Convert a bungalow loft - £29,160

Build a dormer loft conversion - £42,160

Build a swimming pool - £81,160

Build a Mansard loft conversion - £52,160

Concrete foundations - £6,410

Underpin a building - £17,660

Two storey extension - £88,240

Convert a basement - £39,300

Side return extension - £43,300

Loft conversion - £35,250

Garage - £18,660

Single storey extension - £58,200

Outbuilding - £10,160

Install an RSJ - £2,360

Build a kitchen extension - £42,160

More extensions & conversions cost guides...

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