Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.8 (5 reviews)

Find affordable Newport extension builders now

Extension builders rates in Newport range from £20/hour £150/day (A.Gaddarn Builders) to £40/hour £288/day (Carter Thomas Construction Ltd). To see prices and availability now for your job click green button.

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"Timber frame extension" - CF3, job posted 11/02/26

"Attic is already converted, but looking to alter to make space more useable. Potentially consider dormer or dormer windows and fitted storage." - NP18, job posted 30/12/25

"Loft conversion" - NEWPORT, job posted 06/03/25

"RSJ installation" - NEWPORT, job posted 16/10/24

"Remove current conservatory and build a small extension 4x4m" - NP19, job posted 01/05/24

Compare Newport extension builders rates

Compare Newport extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Newport	£41	£233
Extension Builders near Cwmbran	£43	£219
Extension Builders near Risca	£32	£218
Extension Builders near Caerphilly	£33	£208
Extension Builders near Pontypool	£30	£210
Extension Builders near Cardiff	£34	£223
Extension Builders near Clevedon	£32	£243
Extension Builders near Portishead	£33	£247
Extension Builders near Penarth	£35	£223
Extension Builders near Church Village	£34	£214

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 - £25,800

Garden office - £9,800

Granny annexe - £86,800

Build a flat roof extension - £21,800

Convert a Garage - £15,800

Hip to gable loft conversion - £41,800

Convert a bungalow loft - £28,800

Build a dormer loft conversion - £41,800

Build a swimming pool - £80,800

Build a Mansard loft conversion - £51,800

Concrete foundations - £6,050

Underpin a building - £17,300

Two storey extension - £87,700

Convert a basement - £35,250

Side return extension - £39,250

Loft conversion - £31,875

Garage - £18,300

Single storey extension - £51,000

Outbuilding - £9,800

Install an RSJ - £2,000

Build a kitchen extension - £41,800

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