The Assessor of Property must complete a county wide revaluation of all real estate every four (4) years.  The most recent program was completed in 2005. The next reappraisal will be in 2009.

The Assessor usually sends the notices of revaluation to taxpayers much earlier than regular changes made to assessments during non-reappraisal years.  This additional period permits the Assessor to review any protests received and make necessary adjustments before the County Board of Equalization takes control of the assessment roll usually June 1st.  

In Davidson, as well as the other metropolitan counties, the Assessor's staff completes the revaluation appraisals.  In the remaining counties, the appraisal cycle may be longer and the State Division of Property Assessments conducts the reappraisals.  In these counties intervening updates by application of indexes are also sometimes required.  

The Assessor utilizes all three (3) approaches to value for estimating all the real estate values.  Sales of comparable properties or the Comparable Sales Approach is the preferred approach for residential, land, and some commercial.  The Income Approach to valuation is applied to most income producing properties and is relied upon heavily in the conclusion to the final values.  The Cost Approach to value is typically relied upon for special purpose properties for which sales and income data are not readily available.  

There are over 216,000 real estate tax parcels and to complete the reappraisal is actually a full time job for some members of the staff.  During the intervening years between reappraisals, the Assessor updates the property records for description changes and also gathers sales and income information which will be used for the next program.