Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.67 (6 reviews)

Find affordable Swansea extension builders now

Extension builders rates in Swansea range from £25/hour £197/day (AJB BUILDING MAINTENANCE) to £34/hour £260/day (HALL & HARRIS CONSTRUCTION). To see prices and availability now for your job click green button.

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"Install an RSJ" - SA5, job posted 11/09/26

"Loft conversion" - SWANSEA, job posted 12/03/25

"Loft conversion with full width dormer on rear. Please don't ring me I've got laryngitis so can't speak." - SWANSEA, job posted 24/09/24

"Side return extension" - SWANSEA, job posted 26/07/24

"Side extension to extend a kitchen 250 cm width 511cm length knocking wall down with tiled roof and velux roof windows. Just looking for quotes for finish to the point where a new kitchen can be added" - SA2, job posted 04/05/24

"Loft conversion" - SWANSEA, job posted 15/04/24

Compare Swansea extension builders rates

Compare Swansea extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Swansea	£29	£229
Extension Builders near Gorseinon	£29	£228
Extension Builders near Neath	£30	£225
Extension Builders near Port Talbot	£31	£227
Extension Builders near Llanelli	£29	£231
Extension Builders near Neath Port Talbot	£31	£224
Extension Builders near Pyle	£34	£262
Extension Builders near Maesteg	£38	£283
Extension Builders near Porthcawl	£33	£252
Extension Builders near Bridgend	£32	£200

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 - £25,792

Garden office - £9,792

Granny annexe - £86,792

Build a flat roof extension - £21,792

Convert a Garage - £15,792

Hip to gable loft conversion - £41,792

Convert a bungalow loft - £28,792

Build a dormer loft conversion - £41,792

Build a swimming pool - £80,792

Build a Mansard loft conversion - £51,792

Concrete foundations - £6,042

Underpin a building - £17,292

Two storey extension - £87,688

Convert a basement - £35,160

Side return extension - £39,160

Loft conversion - £31,800

Garage - £18,292

Single storey extension - £50,840

Outbuilding - £9,792

Install an RSJ - £1,992

Build a kitchen extension - £41,792

More extensions & conversions cost guides...

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