Base layer
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Upload PropertyBase CSV
Tab or comma separated, with header row. Existing properties matched by Property: ID (PB) then Cotality ID. Rows missing from the new
upload are archived, not deleted. All processing happens locally in your browser — the
server only receives the compressed result.
API keys
Synced across devices via Cloudflare KV, cached locally for instant access. Used by background fetches (LINZ parcel and address lookups in property popups).
Free key from data.linz.govt.nz/my/api. Required for address lookups (parcels and zoning work without one).