What to know about Williamson County’s Property Reappraisal Process

Williamson County’s last reappraisal for real property— occurred in 2016.

The county’s five-year cycle for real property appraisals means owners of homes and other properties will, in spring 2021, begin receiving information in the mail on how their property values have changed.

At the Williamson County Assessor’s Office, staff have been gearing up for the reappraisal for years, doing visual inspection of properties, verifying property transfers and performing valuation analyses.

Here are some of the most frequently asked questions about Williamson County’s reappraisal process.

Q: “Why does the county reappraise my home if I haven't done anything to it?”

A: You probably received your property reappraisal card in the mail recently. Every county in Tennessee operates on either a four-, five-, or six-year cycle of reappraisal. Williamson County is on a five-year cycle. The purpose of a reappraisal is to bring property values to current market value and maintain equalization through the county. 

2020 was a reappraisal year in Williamson County, which resulted in an average 23.4% increase in property values in Brentwood.

Q: “How does it work?” 

A: The Williamson County Assessor's Office conducts reviews for each property in the county on site during the first four years of each reappraisal. During construction, they measure homes to determine the square footage and collect the information needed to determine the value. They also receive building permits from the county and municipalities to make them aware of changes being made to properties that will influence its value. Once this information is collected and their records are updated, they begin revaluing properties to current market value by looking at current sales in defined locations.

Q: “Does a higher valuation automatically mean my property taxes are going up?”

A: No. By state law, when property values go up as a result of a reappraisal, then local governments must reduce their property tax rate so they do not generate any additional property tax revenue solely due to the reappraisal. In Brentwood, the proposed tax rate for next fiscal year will be reduced from $0.36 per $100 of assessed value to $0.29. This rate reduction is based on the overall change in property values city-wide. For any specific property, the impact could be different. If your property value increased by more than 23.4%, then you will in fact see an increase in your city property taxes while those whose values went up less than 23.4% will see a reduction in their property taxes.

For more information regarding the property reappraisal, please contact the

 Williamson County Assessor's Office.