Ind. Code § 6-1.1-15-18

Sec. 18. (a) This section applies to an appeal to which this chapter applies, including any review by the board of tax review or the tax court.

(b) This section applies to any proceeding pending or commenced after June 30, 2012.

(c) To accurately determine market-value-in-use, a taxpayer or an assessing official may:

(1) in a proceeding concerning residential property, introduce evidence of the assessments of comparable properties located in the same taxing district or within two (2) miles of a boundary of the taxing district; and

(2) in a proceeding concerning property that is not residential property, introduce evidence of the assessments of any relevant, comparable property.

However, in a proceeding described in subdivision (2), preference shall be given to comparable properties that are located in the same taxing district or within two (2) miles of a boundary of the taxing district. The determination of whether properties are comparable shall be made using generally accepted appraisal and assessment practices.