Affordable S18 Extension Builders from £27/hr

Find affordable S18 extension builders now

Extension builders rates in S18 range from £27/hour £161/day (JON WINDLE CONSTRUCTION) to £38/hour £299/day (Peak Roof Clean). To see prices and availability now for your job click green button.

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"We're looking to get a quote on building a porch. We have designs and permissions already. We're looking for a quote for the complete job, from groundworks through to a finished space ready to use." - S17, job posted 06/11/26

"My house loft had never been worked upon and I would like someone to look at it, and inform me what can be done and also how much it will cost me." - S14, job posted 25/10/26

"Extention 2 story, already got 1 story- want to got up above it to extend out" - S12, job posted 07/09/26

"Loft conversion" - S8, job posted 27/07/26

"Loft conversion" - CHESTERFIELD, job posted 18/08/25

"Single storey extension" - CHESTERFIELD, job posted 04/05/25

"Loft conversion" - CHESTERFIELD, job posted 21/04/25

"Garage" - CHESTERFIELD, job posted 17/02/25

"Single storey extension" - CHESTERFIELD, job posted 02/03/24

Compare S18 extension builders rates

Compare S18 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Dronfield	£33	£262
Extension Builders near Chesterfield	£33	£257
Extension Builders near Sheffield	£32	£261
Extension Builders near Rotherham	£32	£257
Extension Builders near Wickersley	£32	£258
Extension Builders near Worksop	£33	£265
Extension Builders near Alfreton	£34	£261
Extension Builders near Sutton-in-Ashfield	£33	£264
Extension Builders near Mansfield Woodhouse	£33	£262
Extension Builders near Kirkby-in-Ashfield	£34	£269

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 - £26,112

Garden office - £10,112

Granny annexe - £87,112

Build a flat roof extension - £22,112

Convert a Garage - £16,112

Hip to gable loft conversion - £42,112

Convert a bungalow loft - £29,112

Build a dormer loft conversion - £42,112

Build a swimming pool - £81,112

Build a Mansard loft conversion - £52,112

Concrete foundations - £6,362

Underpin a building - £17,612

Two storey extension - £88,168

Convert a basement - £38,760

Side return extension - £42,760

Loft conversion - £34,800

Garage - £18,612

Single storey extension - £57,240

Outbuilding - £10,112

Install an RSJ - £2,312

Build a kitchen extension - £42,112

More extensions & conversions cost guides...

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