Cost to Build a Single Storey Extension in SG3

Single storey extension cost in SG3 - Sort by rates or availability

Extension builder estimates (based on hourly rates) to build a single storey extension in SG3

Estimates for single storey extension near SG3

"Single storey extension" - STEVENAGE, job posted 11/08/25

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Location in UK	Hourly Rate	Daily Rate
Single Storey Extension near Stevenage	£44	£282
Single Storey Extension near Welwyn Garden City	£42	£268
Single Storey Extension near Hertford	£46	£289
Single Storey Extension near Hitchin	£43	£283
Single Storey Extension near East Hertfordshire	£44	£289
Single Storey Extension near North Hertfordshire	£44	£283
Single Storey Extension near Hatfield	£64	£283
Single Storey Extension near Ware	£47	£296
Single Storey Extension near Harpenden	£86	£315
Single Storey Extension near Letchworth	£44	£283

Estimates for common extension builder jobs in SG3;

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.