Cost of a two storey extension in SO40

Estimates for two storey extension near SO40

Costs range from £87,784 (Trowel On based in SO40) to £88,168 (Safespec Building Services Limited based in SO40), but these are just estimates. The best way to compare costs is to get real quotes from real builders.

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

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

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Location in UK	Hourly Rate	Daily Rate
Two Storey Extension near Totton	£34	£243
Two Storey Extension near Southampton	£34	£243
Two Storey Extension near Romsey	£32	£230
Two Storey Extension near New Forest	£32	£245
Two Storey Extension near Eastleigh	£34	£244
Two Storey Extension near Chandler's Ford	£34	£245
Two Storey Extension near Hedge End	£34	£244
Two Storey Extension near Locks Heath	£33	£240
Two Storey Extension near Winchester	£39	£283
Two Storey Extension near Fareham	£35	£250

Estimates for common extension builder jobs in SO40;

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.