Appraisals & IMPACT

Real Property Appraisals & Reappraisal

Real property is appraised for tax purposes only; appraised values for tax purposes do not change from year to year without physical (room or other addition to building) or major/extreme damage. A decrease or increase in market conditions (home values are lower than when I bought my house 2 years ago, or home values are higher than when I bought my house 2 years ago) will not cause the appraised value for tax purposes to change.

Reappraisals allow the Assessor to adjust property values so that every property in Madison County is appraised at 100% fair market value. January 1 of each Reappraisal year is the only day property is appraised at 100% of Fair Market Value. Madison County is on a four-year reappraisal schedule which means that every four years a MASS Reappraisal is conducted of the entire County.

During Reappraisal Field Appraisers check 33% of the county per year during the three years leading up to the reappraisal year, noting changes (additions and/or deletions). For more information see Why are Reappraisals Necessary?

IMPACT System (formally CAAS) - IN OFFICE ONLY

The public has access to the IMPACT system which has information such as legal address, owners name, mailing address (no phone numbers are available), map and parcel information, and appraised and assessed values for tax purposes. IMPACT is also used to generates copies of the State of TN Real Estate Appraisal Cards (also know as Property Record Cards).

Use of Public Computer (In Office Only) allows the following:

  • Access to individual parcel folders which contain varying amounts of historic data regarding the parcel ownership and the improvements. The majority of these folders have been scanned and are available for printing from a digital format.
  • Access to physical 400’ scale or 100’ scale maps of individual parcels as well as access to Map Viewer, a computer program with all Madison County parcels and an orthographic view of the relative position of any improvements

Individuals are able to copy physical maps, digitized information in parcel folder and property record cards. Please visit our offices at:

100 E. Main Street, Suite 304, Monday through Friday, 8:30 am - 5:00 pm.