Physical climate risk assessment
Asset-level physical climate risk screening across flood, bushfire, coastal recession and extreme heat, using Australian open hazard data and CMIP6 scenarios.
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G-NAF — Geocoded National Address File
Australia's authoritative address file, used as the entry point to the land spine. Coverage, update cadence, licence and the queries the agent runs against it.
G-NAF is the authoritative register of Australian physical addresses. It is the first step for most questions Zenancy answers, because a portfolio arrives as text and a hazard layer expects geometry.
Contents
Around 15 million address records with coordinates, locality, state, postcode, and links to street and locality tables. Each record carries a reliability code for how precisely it was geocoded: property centroid, street level, or locality level. That code carries through to the confidence flag on a risk assessment.
| Field | Notes |
|---|---|
| Coverage | All states and territories |
| Records | ~15.3 million addresses |
| Update cadence | Quarterly (February, May, August, November) |
| Licence | Geoscape end user licence, open data, attribution required |
| Custodian | Geoscape Australia |
Storage
The quarterly release is loaded into parquet on R2, partitioned by state. The address detail, street locality and locality tables are kept separately and joined at query time. A state-scoped address lookup reads a single partition.
Use by the agent
Geocode this CSV of 240 site addresses and tell me which ones failed to match.
| Result | Count | Reliability |
|---|---|---|
| Matched, property centroid | 228 | High |
| Matched, street level | 9 | Medium |
| Unmatched | 3 | — |
g_nafAfter geocoding
A G-NAF coordinate is a point. Hazard layers are polygons, and whether a site is in the flood planning area depends on the parcel, not the point. A match is followed by a cadastral parcel join. The address identifies the parcel, and the parcel is intersected with the hazard geometry.
Frequently asked
What happens when an address does not match?
Unmatched addresses are reported as unmatched rather than snapped to the nearest candidate. You get a list to correct, and the assessment records how many sites were excluded.
Is G-NAF free to use commercially?
Yes. G-NAF is released as open data under the Geoscape end user licence agreement, which permits commercial use with attribution.
Related
solutions solutions Development site screening
Screen dozens or hundreds of sites at once against zoning, flood planning areas, TOD precincts, sales history and constraint layers, instead of running one-lot lookups by hand.
product The agent
How the Zenancy agent works. A reasoning loop with a sandboxed Python and DuckDB environment, a parquet data lake of Australian open data, and outputs that cite their source.
Run it on your own portfolio
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