Minneapolis, Minn., Code of Ordinances § 12 § 249.30

(a) A building within the city shall be deemed a nuisance condition if:
(1) It is vacant and unoccupied for the purpose for which it was erected and for which purpose a certificate of occupancy may have been issued, and the building has remained substantially in such condition for a period of at least six (6) months; or
(2) The building is unfit for occupancy as it fails to meet the minimum standards set out by city ordinances before a certificate of code compliance could be granted, or is unfit for human habitation because it fails to meet the minimum standards set out in the Minneapolis housing maintenance code, or the doors, windows and other openings into the building are boarded up or otherwise secured by a means other than the conventional methods used in the original construction and design of the building, and the building has remained substantially in such condition for a period of at least sixty (60) days; or
(3) Evidence, including but not limited to neighborhood impact statements, clearly demonstrates that the values of neighborhood properties have diminished as a result of deterioration of the subject building; or
(4) Evidence, including but not limited to rehab assessments completed by CPED, clearly demonstrates that the cost of rehabilitation is not justified when compared to the after rehabilitation resale value of the building.
(b) When it is determined by the director of regulatory services or the city fire marshal that a building constitutes an immediate hazard to the public health and safety, and after approval by the city council, the sixty-day waiting period set out in this section may be waived and the other procedures, as set out in this chapter, may be implemented immediately.
(c) Notwithstanding the foregoing provisions, accessory buildings such as garages, barns and other similar structures, not intended to be used for human habitation, shall be deemed to constitute a nuisance condition when such buildings are in violation of section 244.1560 of the housing maintenance code which regulates nondwelling structures or when such accessory buildings are structurally unsound in the opinion of the director of regulatory services. (76-Or-102, § 1, 7-9-76; 77-Or-226, § 2, 11-10-77; 78-Or-233, § 2, 11-9-78; 79-Or-016, § 1, 1-26-79; 80-Or-181 , § 1, 8-8-80; 84-Or-095 , § 1, 6-15-84; 86-Or-236 , § 1, 10-10-86; 91-Or-157 , § 1, 8-9-91; 92-Or-110 , § 2, 9-11-92; 93-Or-142 , § 1, 10-1-93; 94-Or-123 , § 2, 9-16-94; 2006-Or-059 , § 1, 5-26-06; 2013-Or-165 , § 2, 12-6-13)