Minnesota State Building Code, adopted under Minn. Stat. 326B, requires sprinklers in new multifamily, hotel, and most assisted-living buildings. New single-family homes generally do not require sprinklers after a 2017 Minnesota Supreme Court ruling.
Hennepin County cities enforce the Minnesota State Building Code adopted under Minn. Stat. 326B. Sprinklers are required in new multifamily buildings (R-2), hotels, and most licensed assisted-living and boarding-care facilities under NFPA 13 or 13R. New one- and two-family homes were briefly required to have sprinklers, but the Minnesota Supreme Court struck down the rule in 2017, leaving sprinklers optional in new single-family construction. Existing buildings undergoing major renovations, including soft-story conversions and large additions, may trigger sprinkler retrofit requirements set by city building officials and fire marshals.
Construction without required sprinklers, failure to maintain a system, or disabling sprinklers can result in stop-work orders, denied certificates of occupancy, and Minnesota State Fire Marshal enforcement that may include fines and license actions.
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See how Hennepin County's fire sprinkler requirements rules stack up against other locations.
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