NY Real Prop Tax L § 302 (2021)
2021 New York Laws RPT - Real Property Tax Article 3 - Taxable Real Property and Standard of Assessment Title 1 - Assessment of Real Property 302 - Taxable Status Date.

§  302. Taxable status date. 1. The taxable status of real property in   cities and towns shall be determined annually according to its condition   and ownership as of the first day of March  and  the  valuation  thereof   determined  as  of  the applicable valuation date. The taxable status of   real property in a city or town not subject to the  provisions  of  this   section shall be determined as of the date provided by law applicable to   such  city  or  town,  or  if  not  so provided, then as of the date the   assessment  roll  is  completed  and  filed  prior  to  the  hearing  of   complaints  in  connection  therewith. The date of taxable status of the   real property contained on any assessment roll  shall  be  imprinted  or   otherwise  indicated at the top of the first page of each volume of such   roll.2. The taxable status  date  of  real  property  assessed  for  school   district  and  village  purposes  shall be determined in accordance with   sections thirteen hundred two and  fourteen  hundred  of  this  chapter,   respectively.  The date of taxable status of the real property contained   on any village assessment roll shall be imprinted or otherwise indicated   at the top of the first page of each volume of such roll.3.  Notwithstanding  any  other  provision  of  law  to  the contrary,   whenever any person, association  or  corporation  not  entitled  to  an   exemption  from  taxation acquires title to property which is exempt, in   whole or in part, from taxation,  such  property  shall  be  immediately   subject  to  taxation  pursuant  to  section five hundred twenty of this   chapter, except that, in cities with a  population  of  one  million  or   more, such property shall become subject to taxation pursuant to section   four hundred ninety-four of this chapter.4.  The  taxable  status of a special franchise shall be determined on   the basis of its value and its ownership as of the first day of  January   of  the  year  preceding  the year in which the assessment roll on which   such property is to be assessed is completed and filed in the office  of   the  city  or  town clerk, except that taxable status of such properties   shall be determined on the basis of ownership as of  the  first  day  of   January  of  the  second year preceding the date required by law for the   filing of  the  final  assessment  roll  for  purposes  of  all  village   assessment rolls.5.  Notwithstanding  any  other provision of law to the contrary, in a   city with a population of one million or more, whenever any  corporation   or association entitled to exemption from taxation pursuant to paragraph   (a) of subdivision one of section four hundred twenty-a or paragraph (a)   of  subdivision one of section four hundred twenty-b of this chapter, or   any local law adopted pursuant to such  provisions,  acquires  title  to   real  property  that  is not exempt, in whole or in part, from taxation,   such property shall, provided that it otherwise qualifies for  exemption   pursuant  to  such  provisions, be immediately subject to exemption from   taxation in accordance with section four hundred ninety-four-a  of  this   chapter.