Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.7 (20 reviews)

Find affordable B70 extension builders now

Extension builders rates in B70 range from £24/hour £196/day (Bhogal Construction) to £43/hour £375/day (TG Building Services & Son). To see prices and availability now for your job click green button.

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"Install an RSJ. For bow window replacement" - WS5, job posted 15/09/26

"Internal refurbishment works at The Mercian Trust, Great Barr, Walsall. The project includes constructing new partition walls to create a new classroom and office, together with associated plastering, decorating, flooring, ceilings, doors, fixtures, and mechanical and electrical service alterations...." - WS1, job posted 28/07/26

"RSJ installation" - DY3, job posted 18/07/26

"Loft conversion" - WS10, job posted 08/05/26

"Loft conversion" - B68, job posted 06/05/26

"Dormer loft conversion" - B62, job posted 17/03/26

"Garage conversion (separate from main house) into a bedroom" - B42, job posted 17/02/26

"Two storey extension" - WV14, job posted 04/01/26

"Garden self contained annex" - B68, job posted 10/11/25

"Two storey extension" - WEST MIDLANDS, job posted 05/10/25

"Loft conversion with trusses in place, detatched property" - TIPTON, job posted 05/09/25

"New Wetroom for special needs with wheelchair access. Complete build with material,plumbing,wall panels,floor tiles.shower, toilet etc.this will be built joined with a living room. Quotes required.Thanks" - SANDWELL, job posted 26/08/25

"Single storey extension" - WALSALL, job posted 26/08/25

"Two storey extension" - WEST MIDLANDS, job posted 03/08/25

"Two storey extension" - B68, job posted 21/07/25

"Loft extension on a semi detached" - DY4, job posted 20/07/25

"Loft extension on a semi detached" - DY4, job posted 19/07/25

"We are looking for a builder to renew support beams in our cellar" - WALSALL, job posted 06/07/25

"Need an extension builder" - SANDWELL, job posted 13/06/25

Compare B70 extension builders rates

Compare B70 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near West Bromwich	£29	£228
Extension Builders near Sandwell	£29	£231
Extension Builders near Tipton	£29	£228
Extension Builders near Smethwick	£29	£230
Extension Builders near Oldbury	£29	£229
Extension Builders near Wednesbury	£29	£230
Extension Builders near Rowley Regis	£29	£228
Extension Builders near Dudley	£29	£227
Extension Builders near Darlaston	£29	£229
Extension Builders near Coseley	£29	£227

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 - £25,944

Garden office - £9,944

Granny annexe - £86,944

Build a flat roof extension - £21,944

Convert a Garage - £15,944

Hip to gable loft conversion - £41,944

Convert a bungalow loft - £28,944

Build a dormer loft conversion - £41,944

Build a swimming pool - £80,944

Build a Mansard loft conversion - £51,944

Concrete foundations - £6,194

Underpin a building - £17,444

Two storey extension - £87,916

Convert a basement - £36,870

Side return extension - £40,870

Loft conversion - £33,225

Garage - £18,444

Single storey extension - £53,880

Outbuilding - £9,944

Install an RSJ - £2,144

Build a kitchen extension - £41,944

More extensions & conversions cost guides...

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