Rochester, Minn., Code of Ordinances § 7 § 7-3-10

Whenever the director of community development or designee determines that there are reasonable grounds to believe that there has been a violation of any provisions of the housing code, the director or designee shall give notice of such alleged violation to the person responsible therefor as hereinafter provided. Such notice shall: (1)
Be in writing;
(2) Include a description of the real estate sufficient for identification;
(3) Include a statement of the violation for which the notice is being issued;
(4) Specify a reasonable time for the performance of any act it requires; and
(5) Be served upon the owner, or the operator, or the occupant as the case may require. Such notice shall be deemed to be properly served upon such owner, operator, or occupant if personally served on any of them, or by delivering electronically to a confirmed contact such as the owner, operator, or occupant, or if a copy is left at the owner's usual place of abode with a person of suitable age and discretion, the resident therein, or by depositing in the United States Post Office, the notice addressed to the owner at the owner's last known address with postage prepaid thereon, or if service cannot be made by any one of the above means, then such notice shall be deemed served if a copy of such notice be posted and kept posted for 48 hours in a conspicuous place on the premises affected by such notice. Such notice may contain an outline of remedial actions which, if taken, will effect compliance with the provisions of this title.