PremiumBen LeahyReporter·NZ Herald·4 Sep, 2026 05:16 PM10 mins to read‌We've run all the numbers to find out whether buying in the Double Grammar zone and getting access to free education makes sense financially. Find out how buying a home in Ōtāhuhu and sending two children to Kings College could’ve been a cheaper choice over the past decade for a family than buying in the Double Grammar zone and getting free education. The Herald has run the maths on the Double Grammar ‘promise’.

or generations, three magic words have beamed from select real estate listings like a promise: “Double Grammar zone”.