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

Find affordable Caerphilly extension builders now

Extension builders rates in Caerphilly range from £16/hour £130/day (PK CONSTRUCTION) to £36/hour £246/day (River Gods Limited). To see prices and availability now for your job click green button.

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"Convert a bungalow loft" - CF83, job posted 06/11/26

"Dorma loft converison" - CF83, job posted 14/09/26

"Hello A kitchen extension is required. Full planning has been received and structural drawings/recommendations received. Would you be interested in providing a quote? Thank you Jackie" - CF14, job posted 05/06/26

"Loft conversion" - CAERPHILLY, job posted 19/08/25

"Porch with toilet and shower to be built onto front of house" - CF14, job posted 24/06/25

"Looking for a single storey side return to extend kitchen / living space." - CF23, job posted 25/03/25

Compare Caerphilly extension builders rates

Compare Caerphilly extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Caerphilly	£33	£208
Extension Builders near Church Village	£34	£214
Extension Builders near Pontypridd	£33	£211
Extension Builders near Risca	£32	£218
Extension Builders near Cardiff	£34	£223
Extension Builders near Rhondda	£31	£206
Extension Builders near Newport	£41	£233
Extension Builders near Cwmbran	£43	£219
Extension Builders near Penarth	£35	£223
Extension Builders near Rhondda, Cynon, Taff	£31	£209

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 - £25,712

Garden office - £9,712

Granny annexe - £86,712

Build a flat roof extension - £21,712

Convert a Garage - £15,712

Hip to gable loft conversion - £41,712

Convert a bungalow loft - £28,712

Build a dormer loft conversion - £41,712

Build a swimming pool - £80,712

Build a Mansard loft conversion - £51,712

Concrete foundations - £5,962

Underpin a building - £17,212

Two storey extension - £87,568

Convert a basement - £34,260

Side return extension - £38,260

Loft conversion - £31,050

Garage - £18,212

Single storey extension - £49,240

Outbuilding - £9,712

Install an RSJ - £1,912

Build a kitchen extension - £41,712

More extensions & conversions cost guides...

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