Nantucket County, MassachusettsProperty 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.
- Tax bill mailing
- FY2026/2027 quarterly schedule published by Nantucket: first preliminary bill July 1, 2026; second preliminary bill October 1, 2026; third actual bill January 4, 2027; fourth actual bill April 1, 2027.
- Payment deadline
- Nantucket quarterly schedule: first preliminary payment due August 3, 2026; second due November 2, 2026; third actual due February 1, 2027; fourth actual due May 3, 2027. The online-payment page also states standard quarterly due dates are August 1, November 1, February 1, and May 1, subject to the bill’s listed date.
- Assessment appeal
- A real-estate abatement application is filed with the municipal board of assessors by the applicable local statutory deadline; appeal to the Massachusetts Appellate Tax Board within 3 months of the assessors’ action or deemed denial. No countywide 2026 date applies.
Exemptions & appeals
View exemption application (opens in a new tab)Valuation limits
No countywide assessed-value cap. Massachusetts Proposition 2½ generally limits each municipality’s property-tax levy limit growth to 2.5% annually, subject to overrides, exclusions, and certified new growth; assessed values are set locally at full and fair cash value.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.