When to use it

You want contours, slope, sunlight or drainage clipped to a title rather than a rectangle drawn by eye.
You are comparing several properties and want each one measured on the same footing.
You need the parcel appellation, area and title reference alongside the terrain.

How to use it

Open Property and zoom in until parcel outlines appear on the map.
Click inside the parcel. The boundary is fetched and drawn as the analysis area.
Search an address or appellation in the top bar to jump straight to a parcel instead of clicking.
Switch to any area tool. Its results are clipped to the parcel until you clear or redraw the area.

How it works

The click is sent to the LINZ cadastral service, which returns the parcel polygon and its attributes. Where a live title is available the title boundary is used, since a title can span several parcels.

The polygon becomes a cookie cutter: terrain is loaded for the bounding box, and every tool masks its result to the polygon so nothing outside the boundary is counted.

Reading the results

The panel lists the appellation, calculated area, land district and any title references the cadastre holds for the parcel.

Downloads from the other tools carry the parcel name in their metadata.

Limits and warnings

Cadastral boundaries are the surveyed legal lines, which can sit a metre or more from fences and hedges on the ground.
Very large rural parcels may exceed a tool's area limit. The tool will say so; draw a smaller area inside the parcel instead.
The parcel service is a live LINZ feed. If it is unavailable the click does nothing and the panel reports the error.

Data and attribution

Results come from the LINZ national 1 m LiDAR bare-earth elevation model, read in your browser, with the national 8 m model filling any gaps. Tools that use the surface model (Sunlight, Viewshed, Object Heights) read the matching LiDAR surface tiles.

Elevation and cadastral data is sourced from the LINZ Data Service and licensed for re-use under the Creative Commons Attribution 4.0 International licence. Copyright in each LiDAR survey belongs to the body that commissioned it — a regional or district council, Waka Kotahi, NIWA and around thirty others — rather than to LINZ, which hosts and processes the national dataset. Every file exported from this site names the licensors whose surveys cover the area, and anything you publish from those files carries the same attribution requirement. See https://www.linz.govt.nz/products-services/data/licensing-and-using-data/attributing-elevation-or-aerial-imagery-data

Property Report — Builds a multi-page PDF terrain report for one parcel: shaded relief, contours, slope and aspect breakdowns, elevation statistics, and a checklist of the official records the report does not replace.
Saved Properties — Keeps up to five places in your browser and compares their elevation, slope, winter sunlight and drainage side by side.
Contour Lines — Draws topographic contours at any interval from 0.5 m upward across your area and exports them for GIS, CAD, Google Earth, print or laser cutting.
Slope & Aspect — Maps how steep every part of your area is and which compass direction each face points, with a full breakdown of slope classes and aspect shares.

Guides

Property