2013 Wisconsin Act 270 establishes a uniform commercial building code in Wisconsin, while allowing municipalities to grandfather fire detection, prevention, and suppression ordinances that relate to the construction, alteration, or addition to a public building or building that is a place of employment.

Grandfathered Ordinances for Rochester

ARTICLE 8. REQUIRED LAND IMPROVEMENTS.

30-87. SEWERS AND SEWERAGE DISPOSALS; WATER FOR FIRE PROTECTION.

B. Water Supply for Fire Protection.

1. In all commercial, industrial and recreational developments, and in all subdivisions in which five lots or more are created, the Village Plan Commission and Village Board shall consult with the contracted fire company and determine whether there is an adequate water supply for fire protection in the vicinity, and may require the Developer or Owner to install, prior to the issuance of any building permit for structures in the development or subdivision, a dry hydrant in an accessible pond, or an accessible underground cistern or holding tank, the plans for which shall be reviewed by the contracted fire company and the Village Engineer and approved by the Wisconsin Department of Natural Resources, to be used for fire protection. If required by the Village, the pond, cistern or holding tank shall contain at least 20,000 gallons of water or a greater amount determined necessary by the contracted fire company and Village Engineer.