(1) As used in this section, unless the context otherwise requires:

(a) "Residential rate" means the ratio of valuation for assessment for residential real property fixed in accordance with this section.

(b) "Target percentage" means the percentage of aggregate statewide valuation for assessment represented by the valuation for assessment which is attributable to residential real property in the year immediately preceding the year in which a change in the level of value occurs.

(2) After careful consideration of all available information, the general assembly hereby finds and declares that the action of the first session of the fifty-sixth general assembly which set the ratio of valuation for assessment for residential real property at eighteen percent has produced a deviation from the intent of section 3 of article X of the state constitution which ensures that the percentage of the aggregate statewide valuation for assessment which is attributable to residential real property shall remain the same as it was in the year immediately preceding the year in which a change occurs in the level of value used in determining actual value. Therefore, the general assembly finds that legislation is necessary for the following purposes: To adjust the residential rate for 1988; to ensure that deviations from the constitutional mandate set forth in section 3 of article X of the state constitution shall not be perpetuated into this or any future year; and to provide a process for future adjustments in the ratio of valuation for assessment for residential real property.

(3)

(a) The general assembly, pursuant to the authority granted in section 3 of article X of the state constitution, finds and declares that, for the property tax years commencing on or after January 1, 1987, but before January 1, 1989, the percentage of aggregate statewide valuation for assessment which is attributable to residential real property fails to remain as it was in the property tax year commencing January 1, 1986, when the aggregate statewide valuation for assessment was based on the 1985 aggregate statewide valuation for assessment plus the increased valuation for assessment attributable to new construction and to increased volume of mineral and oil and gas production which occurred during 1986. Therefore, for the property tax year commencing January 1, 1988, the ratio of valuation for assessment for residential real property shall be sixteen percent of actual value.

(b) The general assembly, pursuant to the authority granted in section 3 of article X of the state constitution, finds and declares that, for the property tax years commencing on or after January 1, 1989, but before January 1, 1991, the percentage of aggregate statewide valuation for assessment which is attributable to residential real property fails to remain as it was in the property tax year commencing January 1, 1988, when the aggregate statewide valuation for assessment was based on the 1987 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 44.51 percent, for the property tax years commencing on or after January 1, 1989, but before January 1, 1991, the ratio of valuation for assessment for residential real property shall be fifteen percent of actual value.

(c) The general assembly, pursuant to the authority granted in section 3 of article X of the state constitution, finds and declares that, for the property tax years commencing on or after January 1, 1991, but before January 1, 1993, the percentage of aggregate statewide valuation for assessment which is attributable to residential real property fails to remain as it was in the property tax year commencing January 1, 1990, when the aggregate statewide valuation for assessment was based on the 1989 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 44.57 percent, for the property tax years commencing on or after January 1, 1991, but before January 1, 1993, the ratio of valuation for assessment for residential real property shall be 14.34 percent of actual value.

(d) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 1993, but before January 1, 1995, the percentage of aggregate statewide valuation for assessment which is attributable to residential real property will fail to remain as it was in the property tax year commencing January 1, 1992, when the aggregate statewide valuation for assessment was based on the 1991 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 44.73 percent, the ratio of valuation for assessment for residential real property shall be 12.86 percent of actual value for the property tax years commencing on or after January 1, 1993, but before January 1, 1995.

(e) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 1995, but before January 1, 1997, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will fail to remain as it was in the property tax year commencing January 1, 1994, when the aggregate statewide valuation for assessment was based on the 1993 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 45.29 percent, the ratio of valuation for assessment for residential real property shall be 10.36 percent of actual value for the property tax years commencing on or after January 1, 1995, but before January 1, 1997.

(f) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 1997, but before January 1, 1999, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will fail to remain as it was in the property tax year commencing January 1, 1996, when the aggregate statewide valuation for assessment was based on the 1995 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 46.17 percent, the ratio of valuation for assessment for residential real property shall be 9.74 percent of actual value for the property tax years commencing on or after January 1, 1997, but before January 1, 1999.

(g) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 1999, but before January 1, 2001, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will fail to remain as it was in the property tax year commencing January 1, 1998, when the aggregate statewide valuation for assessment was based on the 1997 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 46.49 percent, the ratio of valuation for assessment for residential real property shall be 9.74 percent of actual value for the property tax years commencing onor after January 1, 1999, but before January 1, 2001.

(h) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2001, but before January 1, 2003, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will fail to remain as it was in the property tax year commencing January 1, 2000, when the aggregate statewide valuation for assessment was based on the 1999 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 46.61 percent, the ratio of valuation for assessment for residential real property shall be 9.15 percent of actual value for the property tax years commencing on or after January 1, 2001, but before January 1, 2003.

(i) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2003, but before January 1, 2005, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will not remain as it was in the property tax year commencing January 1, 2002, when the aggregate statewide valuation for assessment was based on the 2001 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 47.08 percent, the ratio of valuation for assessment for residential real property shall be 7.96 percent of actual value for the property tax years commencing on or after January 1, 2003, but before January 1, 2005.

(j) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2005, but before January 1, 2007, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will not remain as it was in the property tax year commencing January 1, 2004, when the aggregate statewide valuation for assessment was based on the 2003 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 47.22 percent, the ratio of valuation for assessment for residential real property shall be 7.96 percent of actual value for the property tax years commencing on or after January 1, 2005, but before January 1, 2007.

(k) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2007, but before January 1, 2009, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will not remain as it was in the property tax year commencing January 1, 2006, when the aggregate statewide valuation for assessment was based on the 2005 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 47.43 percent, the ratio of valuation for assessment for residential real property shall be 7.96 percent of actual value for the property tax years commencing on or after January 1, 2007, but before January 1, 2009.

(l) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2009, but before January 1, 2011, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will not remain as it was in the property tax year commencing January 1, 2008, when the aggregate statewide valuation for assessment was based on the 2007 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 46.82 percent, the ratio of valuation for assessment for residential real property shall be 7.96 percent of actual value for the property tax years commencing on or after January 1, 2009, but before January 1, 2011.

(m) Pursuant to the authority granted in section 3 of article X of the state constitution, the general assembly finds and declares that, for the property tax years commencing on or after January 1, 2011, but before January 1, 2013, the percentage of aggregate statewide valuation for assessment that is attributable to residential real property will not remain as it was in the property tax year commencing January 1, 2010, when the aggregate statewide valuation for assessment was based on the 2009 aggregate statewide valuation for assessment. Therefore, the administrator having determined pursuant to subsection (4) of this section that the target percentage is 46.53 percent, the ratio of valuation for assessment for residential real property shall be 7.96 percent of actual value for the property tax years commencing on or after January 1, 2011, but before January 1, 2013.

(n) Based on the determination by the administrator that the target percentage is 45.86 percent, the ratio of valuation for assessment for residential real property is 7.96 percent of actual value for the property tax years commencing on or after January 1, 2013, but before January 1, 2015.

(o) Based on the determination by the administrator that the target percentage is 45.67 percent, the ratio of valuation for assessment for residential real property is 7.96 percent of actual value for the property tax years commencing on or after January 1, 2015, but before January 1, 2017.

(p) Based on the determination by the administrator that the target percentage is 45.76 percent, the ratio of valuation for assessment for residential real property is 7.2 percent of actual value for property tax years commencing on or after January 1, 2017, until the next property tax year that the general assembly adjusts the ratio of valuation for assessment for residential real property.

(4) To ensure that in present and future years there is no deviation from the intent of section 3 of article X of the state constitution:

(a) Commencing January 1, 1989, for each year in which there is a change in the level of value, the administrator shall determine the target percentage in order to ensure that the percentage of the aggregate statewide valuation for assessment which is attributable to residential real property remains the same as it was in the year immediately preceding the year in which such change occurs. In determining the target percentage, the administrator shall use data concerning valuation for assessment which has been adjusted to eliminate the effects of having rounded the then current residential rate to the nearest one-hundredth of one percent. The net increase in valuation for assessment attributable to new construction and to the net increase in the volume of mineral and oil and gas production shall be added to the valuation for assessment, as so adjusted. The sum so determined shall be the basis on which the target percentage is calculated.

(b) In order to implement the provisions of paragraph (a) of this subsection (4), the administrator shall use data concerning the 1987 valuation for assessment when the aggregate statewide valuation for assessment was based on the 1985 aggregate statewide valuation for assessment plus the net increase in valuation for assessment attributable to new construction and to the net increase in the volume of mineral and oil and gas production which occurred during 1986. The administrator shall add the 1988 net increase in valuation for assessment attributable to new construction and the net increase in the volume of mineral and oil and gas production to the 1987 aggregate statewide valuation for assessment, and the resulting amounts shall be the basis for determining the target percentage for 1989.

(5)

(a) Commencing January 1, 1989, for each year in which there is a change in the level of value used in determining actual value, the general assembly, pursuant to the authority granted in section 3 of article X of the state constitution, shall, by law, adjust the residential rate in order that the percentage of aggregate statewide valuation for assessment which is attributable to residential real property for such year equals the target percentage.

(b) The residential rate shall be based on a documented estimate of the total valuation for assessment of all taxable property in the state arrived at by projecting the percentage of change in the level of value for each class of taxable property to all taxable property in such class in the state.

(c) The administrator shall be responsible for ensuring that a documented estimate study is completed by the division of property taxation.

(6) No later than January 15 of each year in which there is a change in the level of value used in determining actual value, the administrator shall report to the state board of equalization:

(a) An estimate of the total valuation for assessment of all taxable property in the state;

(b) An estimate of the percentage of aggregate statewide valuation for assessment which would be attributable to residential real property if the residential rate fixed in current law remained the same. Such estimate shall be based upon the projected valuations as determined by the documented study.

(c) The target percentage as determined under paragraph (a) of subsection (4) of this section;

(d) The projected residential rate. The rate shall be rounded to the nearest one-hundredth of one percent, and the rate shall ensure that the percentage of the aggregate statewide valuation for assessment which is attributable to residential real property shall remain as it was in the year immediately preceding the year in which such change occurs.

(7) Repealed.