Waconia, Minn., Code of Ordinances ch. 541 § 541.09

Subd. 1. Authority. The code official shall enforce or cause the enforcement of this chapter. The code official shall have the power to render interpretations of this ordinance in conformity with the intent and purpose of this chapter.
Subd. 2. Compliance inspections. When the code official or a health officer has reasonable cause to believe that a condition exists in regard to a rental dwelling or premises that violates this ordinance including, but not limited to, a tenant complain made in good faith, the code official or health officer may enter the rental dwelling to inspect, re-inspect, or otherwise perform the duties imposed by this ordinance. No such entry shall be made, however, until: i) the owner, manager or tenant permits entry; ii) the code official or health officer secures an administrative warrant from a court with jurisdiction; or iii) an emergency exists.
Subd. 3. Conduct on licensed premises; violation. A.
Upon determination by the code official that a violation of this chapter occurred on the licensed premises, the city will notify the licensee by regular mail of the violation to the licensee's most recent address on file with the city. Upon issuance of such notice, a strike shall be assessed against the license. The licensee must take appropriate action to prevent further recurrence.
B. If a second violation occurs on the licensed premises, for which the notice in subdivision 3.A above was given, the city will notify the licensee by regular mail of the violation at the licensee's most recent address on file with the city. Upon issuance of such notice, a second strike will be imposed, and require the licensee to submit a written report of the actions taken, and proposed to be taken, by the licensee to prevent nuisances on the premises. This written report must be submitted to the city within ten (10) business days of the date of the notice.
C. If a third violation occurs on the licensed premises, after the second of any two (2) previous violations, for which notices were sent to the licensee pursuant to this subdivision, a third strike shall be assessed against the license and the license for the rental dwelling or for the unit associated with the violations may be suspended or revoked pursuant to the process described by section 541.03 , subdivision 9 of this chapter.
Subd. 4. Notice to vacate. The code official may post any rental dwelling as being in violation of this chapter and prevent further occupancy by a tenant if a rental dwelling is determined, in the opinion of the code official and as defined in this ordinance, a substandard dwelling. At the time of posting, notice shall be sent to the owner via U.S. mail. Existing tenants shall have forty-five (45) days to vacate a posted property if they are in occupancy at the time of posting, except that occupants shall immediately vacate a posted property if such occupancy will cause imminent danger to the health or safety of the tenants. No person, other than the code official shall remove or tamper with any placard used for posting. No person shall reside in, occupy, or cause to be occupied any building, structure or rental dwelling which has been posted to prevent occupancy except as set forth herein.