MI HB5103

Allows property owners on Great Lakes shorelines (Lake Superior, Michigan, Huron, Erie, and Lake St. Clair) to install soft erosion control structures without a state permit, provided they use approved materials like sandbags, sand-filled geotubes, or biodegradable materials

Requires soft erosion control materials to be made of polypropylene or polyester containing no more than 4% carbon black and no BPA, or biodegradable materials

Mandates property owners file written notice with the state department, county, and municipality before installation, including contact information, location description, and materials to be used

Permits soft erosion structures to remain in place as long as they don't impede shoreline walkability below the ordinary high water mark, remain mostly covered by sand, and comply with local ordinances

Allows property owners with septic systems within 100 feet of wave cut to install hard wall revetments to replace soft structures without a permit, and requires the department to defer permitting to local governments with consistent ordinances in effect as of January 1, 2025