Delaware County, New YorkProperty records & tax offices
Links open the listed public-office or service-provider website in a new tab. This directory does not collect payments.
Find the right property record
Use the property portal for ownership and assessed value, the collector for a bill or balance, and the map for parcel location. Have the address, owner name, or parcel number ready.
Tax bills & filing dates
These are the dates and qualifications recorded in the directory. Confirm your tax year and current deadline with the official office and your property’s notice.
- Assessment appeal
- May 26, 2026 (the fourth Tuesday in May) is the standard New York Board of Assessment Review grievance day; local municipalities may publish alternate 2026 dates. File Form RP-524 with the applicable local assessor.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
March 1, 2026 for most local property-tax exemptions; file RP-467/RP-467-Rnw and other applicable forms with the local city, town, or village assessor; some municipalities publish different dates, so confirm locally.
Senior relief
New York's 2026 Enhanced STAR benefit is for a qualifying owner-occupied primary residence with at least one resident owner age 65 or older by December 31 and 2026-2027 income of $110,750 or less. A municipality may also grant the senior-citizens exemption, reducing taxable assessment by up to 50% subject to its local income limit; file Form RP-467 or RP-467-Rnw with the local assessor, usually by March 1.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.