(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.
  2. When determining  the  value  of  a  mixed-use  or  non-residential
property  using  the  comparable  sales,  income  capitalization or cost
method, the following shall be  considered  when  selecting  appropriate
sales  or rentals comparable to the subject property; provided, however,
that the following requirements shall  apply  only  to  assessing  units
other than cities having a population of one million or more:
  (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.