Section 738. Residential assessment ratio

1. (a) For the purposes of this
  title, sixty days prior to the date for  the  filing  of  the  tentative
  assessment  roll  of  an assessing unit, the state board shall determine
  the  residential  assessment  ratio  for  such   assessing   unit.   The
  residential  assessment  ratio shall be equal to the level of assessment
  of residential property in the  assessing  unit  as  determined  in  the
  market  value  survey  used  or  to  be  used  to  calculate  the  state
  equalization rate for that assessment roll pursuant to article twelve of
  this chapter, subject  to  the  provisions  of  paragraph  (b)  of  this
  subdivision.
    (b)  The  state  board  shall  increase  or  decrease  the residential
  assessment ratio to account for a change in level of assessment  in  the
  total  assessed value of residential real property or, if not available,
  of all taxable real property. For purposes of this section,  "change  in
  level of assessment" has the meaning set forth in section twelve hundred
  twenty of this chapter except that a change in level of assessment shall
  be  determined  with  reference only to residential real property if the
  necessary information is available.
    (c) The residential assessment ratio shall be made  available  at  the
  office  of the county director of real property tax services, the office
  of the county clerk and the office of the assessor or, in a city with  a
  population of one million or more, the office of the tax commissioner of
  such  city.  Such  ratio  shall  be  provided  to  the  office  of court
  administration for distribution to small claims hearing officers.
    2. For purposes of this section, assessing units  participating  in  a
  coordinated   assessing   program   pursuant  to  section  five  hundred
  seventy-nine of  this  chapter  shall  be  considered  to  be  a  single
  assessing unit.