§ 1902. Certification of assessing units. 1. Whenever an assessing
unit other than a special assessing unit or an approved assessing unit
which has or has had in effect a local law adopted pursuant to
subdivision one of section nineteen hundred three of this article
undertakes a revaluation or an update, the governing body of such
assessing unit may apply to the commissioner for certification or
recertification as an "approved assessing unit". The commissioner shall
monitor the progress of such revaluation or update for the purpose of
determining whether or not such assessing unit will be eligible for
certification or recertification as an approved assessing unit.

2. Upon application by the governing body of any assessing unit, filed
no later than one hundred twenty days prior to the completion of the
first tentative assessment roll on which such revaluation or update
shall be entered, the commissioner shall certify or recertify as an
approved assessing unit any such assessing unit which has completed a
revaluation or update. Such certification or recertification shall be
based on the first assessment roll on which the revaluation or update is
entered, provided however, if such revaluation was completed prior to
December thirty-first, nineteen hundred eighty-one, such certification
shall be based upon the latest completed assessment roll. A revaluation
or an update shall be deemed to be completed when its results are
available for entry on a tentative assessment roll. The last date for
filing of an application for certification may be waived by the
commissioner, if circumstances warrant. Notice of such certification or
recertification, or denial thereof, shall be filed by the commissioner
with the chief executive officer of such assessing unit no later than
thirty days prior to the completion of the first tentative assessment
roll following application pursuant to this subdivision.

3. Upon filing an application for approved assessing unit status, the
governing body of a city, town or county shall forward to the school
authorities of each school district located partially in such city, town
or county a notice prepared by the commissioner summarizing the
provisions of section nineteen hundred three-a of this article and
specifying the last date provided for in subdivision one of section
nineteen hundred three-a of this article for the school authorities to
file a notice of intent to use homestead and non-homestead tax rates
with each assessor who prepares an assessment roll used to levy the
school district's taxes.

4. If the governing body of an approved assessing unit fails to adopt
the provisions of section nineteen hundred three of this article so as
to apply to the revaluation or update specified in subdivision two of
this section, the certification of the approved assessing unit shall
expire. Nothing contained herein shall be construed so as to prohibit
such an assessing unit from reapplying for certification as an approved
assessing unit on the basis of a future revaluation or update.