Ontario County property records
Where to look up owners, values, tax bills, parcel maps, deeds and value appeals in Ontario County, New York. Each link goes to the county or state office that keeps the record.
Where each record lives
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Tax bills and payments
Find the current bill, the balance due and past payments with the Ontario County property tax lookup.
Property taxes are billed and collected by the Ontario County Treasurer.
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Parcel maps
The maps come from the Ontario County Tax Mapping.
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Deeds, liens and recorded documents
Search deeds, mortgages, liens and other recorded documents in the Ontario County deed and lien search.
Deeds and liens are recorded by the Ontario County Clerk.
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Value complaints and appeals
Value appeals are heard by the Ontario County Assessment Review Process.
We haven’t found Ontario County’s owner and value records online. Call the county at (585) 396-4451 or start at its website, ontariocountyny.gov.
Links go to official county and state sites and were last checked in November 2026. Offices move their pages, so if one has changed, the county’s own website (ontariocountyny.gov) is the place to start.