Minn. Stat. § 428A.08

No action may be taken under section 428A.02 or 428A.03 , unless owners of 25 percent or more of the land area of property that would be subject to service charges in the proposed special service district and either: (1) owners of 25 percent or more of the net tax capacity of property that would be subject to a proposed service charge, based on net tax capacity; or (2) owners, individuals, and business organizations subject to 25 percent or more of a proposed service charge based on other than net tax capacity file a petition requesting a public hearing on the proposed action with the city clerk. If the boundaries of a proposed district are changed or the land area or net tax capacity subject to a service charge or the individuals or business organizations subject to a service charge are changed after the public hearing, a petition meeting the requirements of this section must be filed with the city clerk before the ordinance establishing the district or resolution imposing the service charge may become effective.