Keweenaw County, MI zoning map, flood zone and property lines by address
Free, no account. Or open the Michigan map and tap a lot.
Towns in Keweenaw County: Eagle River.
Property lines
The parcel outline, parcel number and mapped size come from the Michigan county parcel layers (each county publishes its own), so a Keweenaw lot shows the same lines the township or city assessor draws. Keweenaw County covers about 345,672 acres of land and 3,472,738 acres of water.
Mapped lines are approximate. The Keweenaw County township or city assessor keeps the parcel record (Keweenaw County website); a licensed surveyor sets the true corners.
Zoning
In Michigan zoning is set by the county, the township, or the city or village, depending on where the lot is. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the township or city zoning office has the district, the uses it allows and the lot size it needs. The Keweenaw County website lists the county's municipalities.
ADU and guest houses
Under Michigan Zoning Enabling Act (Public Act 110 of 2006, MCL 125.3101 and following), the county, the township, or the city or village, depending on where the lot is can allow an accessory dwelling unit on a lot with a house. Whether a Keweenaw lot can add one depends on its district; the township or city zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Keweenaw County is soil survey area MI605, Keweenaw County Area, Michigan, last updated August 2026, on Web Soil Survey.
A new or changed septic system in Keweenaw County needs a permit from the Keweenaw County health department (local health department, under Michigan EGLE onsite wastewater rules).
Setbacks
Setbacks in Keweenaw County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the township or city zoning office gives them for the lot's district.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Keweenaw lot and the Forest Service wildfire hazard rating at it.
Questions
How do I find property lines in Keweenaw County?
Open the Michigan map, type the address, and the parcel outline from the Keweenaw County township or city assessor shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Keweenaw County?
Zoning in Keweenaw County is set by the county, the township, or the city or village, depending on where the lot is. ParcelSheet shows the use code on the parcel record and names the municipality; the township or city zoning office has the final word.
Can I build an ADU in Keweenaw County?
Under Michigan Zoning Enabling Act (Public Act 110 of 2006, MCL 125.3101 and following), the county, the township, or the city or village, depending on where the lot is can allow an accessory dwelling unit, and each sets its own rules. In Keweenaw County ask the township or city zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Keweenaw County?
Yes. A new or changed septic system in Keweenaw County needs a permit from the Keweenaw County health department (local health department, under Michigan EGLE onsite wastewater rules). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area MI605 (Keweenaw County Area, Michigan).
What can I build on 5 acres in Keweenaw County?
Zoning in Keweenaw County is set by the county, the township, or the city or village, depending on where the lot is. The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the township or city zoning office has the district and its rules. See the Keweenaw County website.
What are the residential setbacks in Keweenaw County (2026)?
Setbacks in Keweenaw County come from the zoning code of the municipality the lot sits in: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the township or city zoning office gives them for the district. See the Keweenaw County website.
Next to Keweenaw County: Alger County, Houghton County, Marquette County, Ontonagon County.
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