Trading up: Donnybrook, Cork, €320,000

There’s a whole lot more house now at 42 Calderwood than when first built back in the 1970s.

Back then, it was one of the earlier suburbans schemes here, done by builder Owen O’Callaghan, who went on to become one of the south’s most diverse and savvy developers.

O’Callaghan’s still in the game, building new homes and currently most active in Ballincollig’s Lisheen.