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Property and land layers used for mapping and planning

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Understanding land and property layers in Aotearoa

· 8 min read

One of the most common sources of confusion in Māori GIS work is land and property data. Several state and local-government systems represent land differently, and none of them should be mistaken for a complete representation of whenua. A cadastral layer is exceptionally useful for legal and survey questions, but its clean polygons can easily become the dominant visual language of a map and make everything else look secondary.

For Māori GIS, it is often more useful to begin the other way around. Start with the kaupapa and the relationship to whenua, then bring parcel, title, rating, Crown and Māori Land Court information into the picture for the questions those systems can genuinely answer. The state geometry may be necessary because iwi, hapū, whānau and Māori landowners have to work with Crown and council systems, but using those boundaries does not require accepting them as the only meaningful way to understand the land.

This post explains the main parcel and property datasets available through LINZ, what they are designed to represent, and how to use them without allowing legal property geometry to become the unquestioned base truth for Māori mapping.