Affordable SO18 Extension Builders from £20/hr

Find affordable SO18 extension builders now

Extension builders rates in SO18 range from £30/hour £216/day (Property Maintenance Repair) to £41/hour £330/day (Shay building LTD). To see prices and availability now for your job click green button.

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"Dormer loft conversion" - EASTLEIGH, job posted 11/04/26

"Two storey and side extension" - SO16, job posted 26/01/26

"Underpinning" - SOUTHAMPTON, job posted 18/10/25

"Build a dormer loft conversion" - SO17, job posted 10/08/25

"Cost of a loft conversion" - SO17, job posted 10/08/25

"Two storey extension 3.6 x 8 x2" - SOUTHAMPTON, job posted 20/06/25

"Garden office" - SOUTHAMPT, job posted 21/01/25

"Kitchen extension" - SOUTHAMPTON, job posted 19/10/24

"Single storey extension" - SO15, job posted 09/03/24

"Single storey extension, bricks and roof only" - SO31, job posted 04/02/24

"Side return extension" - EASTLEIGH, job posted 18/11/23

"Single storey extension" - SOUTHAMPTON, job posted 17/10/23

Compare SO18 extension builders rates

Compare SO18 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Southampton	£34	£243
Extension Builders near Hedge End	£34	£244
Extension Builders near Eastleigh	£34	£244
Extension Builders near Chandler's Ford	£34	£245
Extension Builders near Locks Heath	£33	£240
Extension Builders near Totton	£34	£243
Extension Builders near Romsey	£32	£230
Extension Builders near Fareham	£35	£250
Extension Builders near Winchester	£39	£283
Extension Builders near Lee-on-the-Solent	£35	£249

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 - £25,952

Garden office - £9,952

Granny annexe - £86,952

Build a flat roof extension - £21,952

Convert a Garage - £15,952

Hip to gable loft conversion - £41,952

Convert a bungalow loft - £28,952

Build a dormer loft conversion - £41,952

Build a swimming pool - £80,952

Build a Mansard loft conversion - £51,952

Concrete foundations - £6,202

Underpin a building - £17,452

Two storey extension - £87,928

Convert a basement - £36,960

Side return extension - £40,960

Loft conversion - £33,300

Garage - £18,452

Single storey extension - £54,040

Outbuilding - £9,952

Install an RSJ - £2,152

Build a kitchen extension - £41,952

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