New York Consolidated Laws, General City Law - GCT § 19. General grant of powers

1. Every city is granted power to regulate, manage and control its property and local affairs and is granted all the rights, privileges and jurisdiction necessary and proper for carrying such power into execution. No enumeration of powers in this or any other law shall operate to restrict the meaning of this general grant of power, or to exclude other powers comprehended within this general grant.

2. Whenever the constitutionality of any local law, ordinance, rule or regulation of a city is brought into issue upon a trial or hearing of any civil cause of action or proceeding in any court, and the city is not a party to such action or proceeding, notice shall be served upon the city in accordance with section one thousand twelve of the civil practice law and rules.