What is Market Value?
Market value is defined as the most probable price which a property
should bring in a competitive and open market under all conditions
requisite to a fair sale, the buyer and seller, each acting prudently,
and assuming the price is not affected by undue stimulus. Implicit in
this definition is the consummation of a sale as of a specified date and
the passing of title from seller to buyer under conditions whereby:
    - Buyer and seller are typically motivated;
- Both parties are well informed or well advised and both acting in what they consider their own best interest;
- A reasonable time is allowed for exposure in the open market;
- Payment is made in terms of cash in U.S. dollars or in terms of financial arrangements comparable thereto; and
- The price represents the normal consideration for the property sold
    unaffected by special or creative financing or sales concessions granted
    by anyone associated with the sale.*
How is Market Value Estimated?
To estimate the market value of your property the Assessor generally uses three approaches:
    - MARKET APPROACH is to find properties that are
    comparable to yours which have sold recently. Local conditions peculiar
    to your property are taken into consideration. The Assessor also uses
    sales ratio studies to determine the general level of assessment in a
    community in order to adjust for local conditions. This method is
    usually considered the most important in determining the value of
    residential property.
- COST APPROACH is an estimate of how many dollars at
    current labor and material prices it would take to replace your
    property with one similar to it. In the event the improvement is not new
    appropriate amounts for depreciation and obsolescence would be deducted
    from replacement value. The value of the land then would be added to
    arrive at the total estimate of value.
- INCOME APPROACH is used if your property produces
    income such as an apartment or office building. In that case, your
    property could be valued according to its ability to produce income
    under prudent management; in other words, what another investor would
    give for a property in order to gain its income. The income approach is
    the most complex of the three approaches because of the research
    information and analysis necessary for an accurate estimate of value.
    This method requires thorough knowledge of local and national financial
    conditions, as well as any developmental trends in the area of the
    subject property being appraised since errors of inaccurate information
    can seriously effect the final estimate of value.
Why do Values Change?
State law requires that all real property be reassessed every two
years. The current law requires the reassessment to occur in odd
numbered years. Changes in market value as indicated by research, sales
ratio studies and analysis of local conditions, as well as economic
trends both in and outside the construction industry, are used in
determining your assessment.
*"The Dictionary of Real Estate Appraisal," 3rd Edition, Appraisal Institute, 1993, p. 140.