Section 328. Option to change to single appointed assessor

In any city or
  town which has retained the office of elective assessor, the legislative
  body of such city or town may adopt a local law providing that from  and
  after  a date set forth in such local law, which date must be within one
  year after the date on which such local law was adopted, there shall  be
  but  one  assessor, to be appointed as provided in section three hundred
  ten of  this  title.  The  legislative  body,  in  its  discretion,  may
  determine  that  a  local  law adopted pursuant to this section shall be
  subject to a mandatory or permissive referendum, or  not  subject  to  a
  referendum.  Any  such  referendum  shall  be  conducted  in  the manner
  prescribed in section twenty-three or twenty-four of the municipal  home
  rule  law,  as  the case may be. On December thirty-first of the year in
  which such local law shall  take  effect,  the  term  or  terms  of  all
  assessors then in office shall terminate.