The Township Council may from time to time on its own motion or on petition, after public notice and hearing, amend, supplement or change the regulations and zones herein established. Whenever the owners of 50% or more of the frontage in any zone or part thereof shall present a petition duly signed and acknowledged to the Council, requesting an amendment, supplement, change or repeal of the regulations prescribed for such zone or part thereof, it shall be the duty of the Council to vote upon said petition within 90 days after the filing of the same by the petitioners with the Municipal Clerk. All zoning amendments shall be referred to the Planning Board for a recommendation.

If any area is hereafter transferred to another zone by a change in zone boundaries by an amendment as above provided, the provisions of this chapter in regard to buildings or premises existing at the time of the passage of this chapter shall apply to buildings or premises existing at the time of passage of such amendment in such transferred area.