Orono, Minn., Code of Ordinances ch. 4.04, art. IV § 4.04.440

A property owner that leases the subject property as set forth on the following list is exempt from the rental licensing requirements of this article but not other regulations or codes applicable to structures or properties: (1)
Retail/commercial/industrial rental activities.
(2) Rental property which is licensed as a nursing home or boarding care home by the state department of health and state-licensed residential facilities. This exception shall not apply if no services are provided to the tenants, or the services are incidental to, or independent of, the landlord/tenant relationship.
(3) Residential property that is occupied by the owner or the owner's qualifying relative and two or less tenants where the owner and the tenants share all living space within the dwelling.
(4) Residential property that has been sold on contract for deed so long as the vendee occupies the property and the sale document used to memorialize the sale is a state uniform conveyancing blank or is recorded with the county recorder's office and a copy is provided to the city upon request.
(5) Residential property that is owned by a person commonly referred to as a "snowbird" when the property is rented or occupied to another person for a period of less than 120 consecutive days while the owner is residing out of the state. The owner must occupy the property during the remainder of the year.
(6) Dwellings owned by a member of the United States armed services who is on active duty and the property is rented to another person during the time of active duty. The owner must provide the city with a copy of the owner's current military orders and must occupy the property when not on active duty as the owner's primary residence.