Our Data Methodology

How the data flows

1. 1

   Collect from official sources

   We read tax sale notices directly from municipal and provincial government websites and their published documents. We do not copy listings from third-party aggregators or resale sites — those are used, at most, only as a hint to find the original government notice.

2. 2

   Parse the details we can verify

   From each official notice we extract the property location, legal description, minimum tender or opening bid where it is published, the closing date, and the tender/auction instructions. We keep a record of the source document so a listing can always be traced back to its origin.

3. 3

   Add assessment context where available

   Where a province's assessment authority publishes a value for the parcel, we attach it as context. Not every province exposes a public assessment lookup, and vacant land often has no assessment on record — in those cases the field is simply left blank rather than guessed.

4. 4

   Track status through the sale lifecycle

   A listing is shown as active only while its tender or auction is still open. Once the published closing date passes, it automatically moves to a historical status. Where a municipality later publishes an outcome (sold, cancelled, postponed), we record that status too.

Known limitations

• Coverage varies by province. Some jurisdictions publish clear, machine-readable notices; others publish scanned PDFs, hold in-person-only auctions, or provide no public tax-sale page at all.
• Timing gaps happen. A municipality may post or amend a notice between our update cycles, so always verify the closing date against the official source.
• Address and parcel matching is imperfect for rural or vacant land that has no civic address in the notice.
• Assessment values, where shown, come from provincial authorities and may be dated or unavailable.