NAC361.662. Ratio studies and other statistical analyses: Performance upon request of and evaluation by State Board.

     1. Upon the request of the State Board, the Department or county assessor shall perform and submit to the State Board any ratio study or other statistical analysis that the State Board deems appropriate to assist it in determining the quality and level of assessment of any class or group of properties in a county.

     2. Each ratio study or other statistical analysis requested by the State Board pursuant to this section must:

     (a) Be performed in accordance with the provisions of the Standard on Ratio Studies adopted by reference in NAC 361.658, except any specific provision of the Standard on Ratio Studies that conflicts or is inconsistent with the laws of this State or any regulations adopted by the State Board or the Commission;

     (b) Identify the statistical population that is the subject of the ratio study or statistical analysis, which may be divided into two or more strata according to neighborhood, age, type of construction or any other appropriate criterion or set of criteria; and

     (c) Include an adequate sampling of each stratum into which the statistical population that is the subject of the ratio study or statistical analysis is divided, and such statistical criteria as may be required, to indicate an accurate ratio of assessed value to taxable value and an accurate measure of equality in assessment.

     3. The State Board will determine the appropriate time frame from which sales of property may be considered in any ratio study or statistical analysis requested pursuant to this section. If the State Board determines that the appropriate time frame is any period other than the 36 months immediately preceding July 1 of the year before the applicable lien date, the State Board will provide the reasons for that determination to the Department or county assessor.

     4. The State Board will evaluate each ratio study and statistical analysis performed pursuant to this section to determine whether the ratio study or statistical analysis reliably indicates the quality and level of assessment for the applicable class or group of properties. In making that determination, the State Board will consider:

     (a) Whether the Department or county assessor used a sufficient number of sales or appraisals in performing the ratio study or statistical analysis;

     (b) Whether the samples of property selected by the Department or county assessor adequately represent the total makeup of the applicable class or group of properties;

     (c) Whether the Department or county assessor correctly adjusted the samples of property for market conditions;

     (d) Whether any variations among sales or appraisal ratios affect the reliability of the ratio study or statistical analysis; and

     (e) Any other matters the State Board deems relevant.

     (Added to NAC by St. Bd. of Equalization by R153-09, 4-20-2010, eff. 10-1-2010)