Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.67 (3 reviews)

Find affordable Johnstone extension builders now

Extension builders rates in Johnstone range from £18/hour £172/day (Glencroft Builders Ltd) to £39/hour £291/day (Glasgow Joiners). To see prices and availability now for your job click green button.

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"Garage" - PAISLEY, job posted 20/04/26

"Fully extend a room and downstairs toilet" - PA6, job posted 08/04/26

"Hip to gable loft conversion" - PAISLEY, job posted 11/11/25

"Great and reliable service, honest advice and competitive on price" - GLASGOW,reviewed 03/08/17, DAVID SMITH

Compare Johnstone extension builders rates

Compare Johnstone extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Johnstone	£35	£276
Extension Builders near Renfrewshire	£35	£278
Extension Builders near Paisley	£34	£259
Extension Builders near Barrhead	£35	£255
Extension Builders near Erskine	£34	£258
Extension Builders near Renfrew	£35	£264
Extension Builders near Clydebank	£35	£265
Extension Builders near Newton Mearns	£35	£263
Extension Builders near Giffnock	£35	£260
Extension Builders near Dumbarton	£29	£232

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 - £26,128

Garden office - £10,128

Granny annexe - £87,128

Build a flat roof extension - £22,128

Convert a Garage - £16,128

Hip to gable loft conversion - £42,128

Convert a bungalow loft - £29,128

Build a dormer loft conversion - £42,128

Build a swimming pool - £81,128

Build a Mansard loft conversion - £52,128

Concrete foundations - £6,378

Underpin a building - £17,628

Two storey extension - £88,192

Convert a basement - £38,940

Side return extension - £42,940

Loft conversion - £34,950

Garage - £18,628

Single storey extension - £57,560

Outbuilding - £10,128

Install an RSJ - £2,328

Build a kitchen extension - £42,128

More extensions & conversions cost guides...

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