2023 New York Laws › GCT - General City › Article 4 - Plumbing and Drainage › 45-B - Further Requirements Relating to the Business of Plumbing.

* § 45-b. Further  requirements  relating to the business of plumbing.
  1.  No person otherwise qualified shall engage in the trade, business or
  calling of a plumber or of plumbing in a city of this state as employing
  or master plumber until he has first procured from the board  of  health
  or the examining board of plumbers if so designated by local law in such
  city or, in the city of New York, from the department of health, a metal
  plate  or sign appropriately lettered or marked "licensed plumber;" such
  plate or sign to be conspicuously posted in  the  window  of  the  place
  where such business is conducted. Any person retiring, abandoning or not
  actually  engaged  in  such  trade,  business  or  calling  hereinbefore
  mentioned, shall surrender to the board of health or the examining board
  of plumbers if so designated by local law of the city, or, in  the  city
  of  New  York,  to the department of health such metal plate or sign and
  shall not again engage in such trade, business or calling until  he  has
  again procured a metal sign as herein provided.
2.  Within  thirty  days after this section takes effect, the board of
  health or the examining board of plumbers if so designated by local  law
  in  every city of this state and in the city of New York, the department
  of health, shall prepare metal plates or signs, at least fourteen inches
  wide and  not  less  than  twenty-two  inches  in  length  appropriately
  lettered  or  marked  "licensed plumber," the lines of each letter to be
  four inches long and five-eighths of an inch wide; such  plate  or  sign
  shall,  on  some  part  thereof, contain an identification number, which
  number together with the name and location of the place of  business  of
  the  person to whom issued shall be recorded in the office of such board
  of health or the examining board of plumbers if so designated  by  local
  law,  or such department of health in the city of New York. Every person
  now actually engaged or about  to  engage  in  the  trade,  business  or
  calling  of a plumber or of plumbing as employing or master plumber, who
  has otherwise complied with  the  provisions  of  law  relating  to  the
  conduct  of  such business upon the payment of five dollars to the board
  of health or the examining board of plumbers if so designated  by  local
  law  of  such  city,  or  in  the  city of New York to the department of
  health, shall have issued to him a sign or plate hereinbefore described.
  In the city of New York a renewal fee of two dollars per annum shall  be
  charged  for  each  such  plate  or  sign  which shall be issued without
  reexamination, such fee to be paid by the holder of such plate  or  sign
  to  the  department  of health annually during the month of January. Any
  person to whom such plate or sign has been issued who shall loan,  rent,
  sell  or  transfer  the  same  to  another person whether such person be
  entitled to receive a  similar  plate  or  sign  or  not,  or  otherwise
  wilfully  violates  the  provisions of this section shall be guilty of a
  misdemeanor punishable by a fine of not exceeding fifty dollars for  the
  first  offense, and not less than one hundred dollars nor more than five
  hundred dollars for a subsequent offense, and in addition thereto  shall
  forfeit his license and certificate of qualifications.
The provisions of this section shall apply to all cities of the state,
  including the city of New York.
* NB There are 2 § 45-b's