28 House Price Index Annual Value Change We can now see the effect of the recent slowdown in the main centres in the top half of the North Island reflected in the annual change percentage compared to many other main urban areas in the North Island. In the South Island the lack of growth across Canterbury is clear while Dunedin and Invercargill have not experienced the same long- term strength their smaller neighbouring districts have. *Size of bubble represents the number of properties in the Territorial Authority