Land prices within monocentric cities typically decline from the centre to the urban periphery. More complex patterns are observed in polycentric and coastal cities; discrete jumps in value can occur across zoning boundaries. Information on these patterns within Auckland is important to understand: (a) the nature of Auckland's development, including the impact of infrastructure investments; and (b) the effects of regulation in causing discrete land valuation changes. One such regulation in Auckland is the metropolitan urban limit (MUL); we specifically examine whether the existence of this growth limit affects land prices. We do so in the context of a model of all Auckland land values over a twelve-year period, finding a strong zoning boundary effect on land prices.