Williamson County, TennesseeProperty 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
- Early October 2026; the official Williamson County Trustee FAQ says annual statements are mailed in early October, but does not publish a specific day.
- Payment deadline
- 2026 Tennessee property taxes are due October 5, 2026 (the first Monday in October) through February 28, 2027; unpaid taxes become delinquent March 1, 2027.
- Assessment appeal
- Contact the Williamson County Property Assessor at 615-790-5708 no later than June 11, 2026 to schedule a 2026 County Board of Equalization appeal. A State Board appeal is due August 1, 2026 or within 45 days after the county decision notice, whichever is later.
Exemptions & appeals
View exemption application (opens in a new tab)Exemption filing
Tennessee has no general homeowner homestead property-tax exemption. For tax year 2026, first-time Greenbelt applications are due March 15, 2026; State Board of Equalization property-tax exemption applications are generally due May 20, 2026; and state Tax Relief/Tax Freeze applications are filed with the county Trustee. Official program information: https://comptroller.tn.gov/office-functions/pa/property-taxes/property-tax-programs/tax-relief.html
Senior relief
The Williamson County Trustee administers Tennessee Property Tax Relief and the county's local-option Property Tax Freeze for qualifying elderly and disabled homeowners, disabled veterans, and surviving spouses. Williamson County's 2026 local-option freeze income limit is $69,150. Apply through the Trustee and meet the program's age, principal-residence, ownership, and income rules.
Valuation limits
No general Tennessee individual assessed-value cap was verified. Tennessee uses periodic reappraisal and certified-tax-rate/revenue-neutral rules; Greenbelt present-use valuation and any qualifying senior Property Tax Freeze are separate protections.
For a valuation appeal, use the appeal date in the tax and filing section above. Keep your notice, supporting evidence, and proof of submission.
More exemption & appeal guidance →