Premium volatility and regional differentiation
Recent Consumer NZ analysis indicates that house and contents premiums are diverging more sharply between centres as hazard data and catastrophe models become more location‑specific. Instead of uniform national increases, portfolio outcomes are varying by region and risk band. For a large home, median premiums in Auckland fell by about 11% year on year, while similar policies in Wellington and Christchurch increased by around 10%. Across six surveyed urban centres, Wellington remained the highest‑cost city, with a median annual combined house and contents premium of $3,824 in 2025. Dunedin recorded the lowest median cost at $2,227. This spread reflects a mix of updated risk assumptions, claims experience, and differing appetites for particular perils or geographies. Competitive positioning and variations in reinsurance and capital costs are also contributing to differences in pricing between carriers.