Minn. Stat. § 462.16
The council shall have the power to enact ordinances for the enforcement of the rights which shall be acquired under sections 462.12 to 462.17, and to fix penalties for their violation, including a fine not exceeding $100 or confinement in the city workhouse not exceeding 90 days. Violations of the ordinances may be prosecuted in the district court. Restricted residence districts created pursuant to sections 462.12 to 462.16 shall be subject to the provisions of section 541.023. In construing the scope and effect of a residence district restriction, equitable principles shall be utilized and the following shall be considered: the historic pattern of enforcement or nonenforcement; changed circumstances; the length of time during which current uses have been allowed to exist; the actual impact of current land uses; and detrimental reliance.
Minn. Stat. § 462.16
(1622) 1915 c 128 s 5; 1981 c 357 s 107; 1998 c 254 art 2 s 47