New York Consolidated Laws, Real Property Tax Law - RPT § 305-a. Assessment using the comparable sales, income capitalization or cost method

(a) “Mixed-use property” means a property with a building or structure used for both residential and commercial purposes.

(b) “Non-residential property” means a property with a building or structure used for commercial purposes.

(a) sales or rentals of properties exhibiting similar use or the use at the time of sale in the same real estate market.  Comparable properties should include properties located in proximate location to the subject property unless there is an inadequate number of appropriate sales or rentals within the same market;  and

(b) sales or rentals of properties that are similar in age, condition, use or the use at the time of sale, type of construction, location, design, physical features and economic characteristics including but not limited to similarities in occupancy and market rent.