15-7-111. Periodic revaluation of certain taxable property. (1) The department of revenue shall administer and supervise a program for the revaluation of all taxable property within classes three, four, and ten. All other property must be revalued annually. The revaluation of class three, four, and ten property is complete on December 31, 1996. The amount of the change in valuation from the 1996 base year for each property in classes three, four, and ten must be phased in each year at the rate of 25% of the change in valuation from December 31, 1998, to the appropriate percentage of taxable market value for each class.
     (2) The department shall value and phase in the value of newly constructed, remodeled, or reclassified property in a manner consistent with the valuation within the same class and the values established pursuant to subsection (1). The department shall adopt rules for determining the assessed valuation and phased-in value of new, remodeled, or reclassified property within the same class.
     (3) Beginning January 1, 2001, the department of revenue shall administer and supervise a program for the revaluation of all taxable property within classes three, four, and ten. A comprehensive written reappraisal plan must be promulgated by the department. The reappraisal plan adopted must provide that all class three, four, and ten property in each county is revalued by January 1, 2003, and each succeeding 6 years. The resulting valuation changes must be phased in for each year until the next reappraisal. If a percentage of change for each year is not established, then the percentage of phasein for each year is 16.66%. The department shall furnish a copy of the plan and all amendments to the plan to the board of county commissioners of each county.
     (4) (a) If the value of an individual property is equal to or less than 75% of the appraised value of the improvements situated on the land, then the assessed value of the land is the land's appraised value as phased in under subsection (1) and the other provisions of subsection (1) do not apply.
     (b) Subject to subsection (4)(c), if the value of an individual property is greater than 75% of the appraised value of the improvements situated on the land, then the value of the land must be determined as follows:
     (i) the department shall calculate the average value of improvements in the state;
     (ii) if the value of the improvements on an individual property is greater than the state average value of improvements, then the land is valued at 75% of the appraised value of the improvements situated on the land and the remainder of the land value is exempt from taxation; and
     (iii) if the value of the improvements on an individual property is less than or equal to the state average value of improvements, then the land is valued at 75% of the appraised value of the improvements situated on the land and the remainder of the land value is exempt from taxation.
     (c) The value of land upon which improvements are situated may not exceed the phased-in value of the land.
     (5) For purposes of subsection (4), the following definitions apply:
     (a) "average value of improvements" means the statewide arithmetic mean of the appraised value of all improvements that have a market value in excess of $7,500;
     (b) "improvements" means residential dwellings and includes housetrailers, mobile homes, and manufactured homes;
     (c) "land" includes contiguous parcels or lots under single ownership up to 5 acres.

     History: En. 84-429.14 by Sec. 1, Ch. 294, L. 1975; R.C.M. 1947, 84-429.14; amd. Sec. 1, Ch. 596, L. 1987; amd. Sec. 4, Ch. 613, L. 1987; amd. Sec. 2, Ch. 636, L. 1989; amd. Secs. 2, 8, Ch. 680, L. 1991; amd. Sec. 4, Ch. 13, Sp. L. July 1992; amd. Sec. 4, Ch. 463, L. 1997; amd. Sec. 87, Ch. 584, L. 1999.