Ontario County parcel checks start with tax mapping and OnCor

Start an Ontario County parcel search with the county’s Tax Mapping and OnCor pages. Use those sources instead of parcel facts copied to a real-estate site.

The county tools can help you check a lot line, parcel number, assessment, or property description before a purchase. First, match the street address to a parcel. Save the parcel or account number, map result, and date of the search.

A legal, survey, or assessment question may need more than the map. Note whether Tax Mapping, Real Property, a city or town, or a licensed professional handles it. Confirm that detail before you spend money or rely on a property line.