In short, no.  Your home value is the market value. The definition for market value is the most probable price that a property will sell for in a free market of buyers and sellers, free from constraining pressures or unusual situations. This value is found by obtaining a home appraisal.

   The tax-assessing authorities use a fractional formula to determine what percentage of market value your house is worth. Usually they call this figure the sales ratio. Which can also be called, depending on the jurisdiction, the average ratio, assessment level, director’s ratio, the common level of 100% of true value, RAR (residential assessment ratio) or the equalization rate (which may not always be equivalent to the sales ratio). If the sales ratio is 50% then a house that would sell for a market value of $200,000 would be assessed at $100,000.

A Nashville real estate agent, or any realtor for that matter, can also give you a comparative market analysis of your home which will also give you an estimated market value of your home, based on recent sold homes in the area comparable to your home.