Construction hours in Ramsey County, MN — sometimes called construction noise rules or contractor work-hour ordinances — set when contractors can run power tools, hammers, and heavy equipment.
Ramsey County sets no countywide construction hours — your city does. St. Paul (county seat) caps construction/demolition noise at 85 dBA (L10) measured 50 feet from the source, and restricts noisy work near residences at night.
Minnesota cities regulate construction hours, not the county. In St. Paul, construction and demolition equipment may not exceed an L10 noise level of 85 dBA at 50 feet from the source, and disturbing power-tool/equipment noise is barred at night. Suburbs like Roseville and Maplewood set their own permitted work windows (commonly 7 a.m.–9 or 10 p.m. weekdays, later start on weekends). Check your city's code before scheduling early-morning or weekend construction. The statewide noise floor (Minn. R. 7030.0040) still applies to sustained levels.
Exceeding St. Paul's 85 dBA construction limit is a code violation; enforcement is complaint-based, with stop-work orders and misdemeanor citations possible.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Ramsey County's construction hours rules stack up against other locations.
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