Building permits, zoning and land rules in Monroe County, Michigan

Yes. Before constructing a building or structure in Monroe County, the owner or the owner's representative must apply to the appropriate enforcing agency; a permit is also required for a change in use or occupancy, while qualifying ordinary repairs are exempt¹. The enforcing agency may be the state, county or a local government, so verify the jurisdiction assigned to the parcel before filing¹. Construction is governed by the Michigan building and residential codes¹. Permitted construction is subject to periodic inspections⁹. A new or altered building cannot be used or occupied until the code official issues a Certificate of Occupancy⁷.

The correct building office depends on the jurisdiction assigned to the parcel; the enforcing agency may be state, county or local¹. Start with the city, village or township hall for the parcel and ask it to identify the building-permit enforcing agency. Whichever agency that is, septic permits for the parcel stay with Monroe County Environmental Health⁴. For property inside the City of Monroe, the City Building Division reviews plans, checks zoning compliance, issues permits and performs building, plumbing, mechanical and electrical inspections¹⁰. City applications must be submitted before construction or renovation starts, and an approved permit must be in hand before work begins¹¹. City permit holders must request required inspections, and the final building inspection follows approval of the final electrical, plumbing and heating inspections¹¹. For businesses inside the City of Monroe, the zoning-compliance application costs $50 and the Certificate of Occupancy application costs $125; these are city business-process fees, not countywide building-permit fees¹¹. A Michigan licensing exemption may cover an individual building a residence on the individual's property for personal use and occupancy, but it does not waive permits or other rules¹².

Monroe County does not have county-level zoning authority, including in unincorporated areas, but that does not make a parcel unzoned². Each city, village and township has its own zoning map and ordinance, so allowed uses, required yards, building height and lot coverage depend on the parcel's local district³. Minimum lot size also comes from the applicable local code; the City of Monroe reduced its own minimum lot-size and lot-width requirements, but that city rule does not govern land elsewhere in the county¹³. The City of Monroe also reduced minimum dwelling-size requirements without publishing the revised dimensions on the reviewed page¹³. For a township rezoning, the application starts at township hall, proceeds to the planning commission for a recommendation after a public hearing, and ends with the township board¹⁴. Ask the parcel's city, village or township zoning office for the current map and district schedule; zoning approval from that office does not replace the county septic permit⁴.

Monroe County Environmental Health enforces the state and local rules for onsite sewage systems⁴. When sanitary sewer is unavailable, new construction that produces sewage must use an onsite sewage disposal system installed under the county sanitary code⁴. The application requires county approval, a permit, applicable fees and a site assessment⁴. A septic permit is generally valid for 12 months, with one possible 60-day extension requested in writing before it expires⁵. The installer must request inspection after placing sewer and distribution lines and before covering or operating the system; after backfill approval, the system may remain open no longer than 48 hours unless the Health Officer approves otherwise⁵. A homeowner installing a system for a habitable building the homeowner will occupy must obtain a single-installation license and pass the Health Officer's written exam before starting⁶. Only 0.3% of county soils rate free of severe limits for a conventional drain field, so make the site assessment an early purchase contingency⁸.

We could not confirm a countywide rule allowing long-term RV occupancy on private land in Monroe County. Zoning varies by city or township and parcel district, so ask the local zoning office whether an RV may be occupied and under what conditions¹⁴. Monroe County requires an Environmental Health permit for a temporary camping event involving 5 or more tents, campers or RVs; that event rule does not answer whether one RV may be used as a residence¹⁵. A tiny house, including one on wheels, does not receive automatic treatment as a recreational unit under Michigan's guidance; local zoning, building, electrical and plumbing approvals are required, along with well and septic approvals where applicable¹⁶. Any building that produces sewage where sewer is unavailable needs an onsite sewage disposal system⁴.

1. Identify the city, village or township containing the parcel and obtain its zoning map and ordinance^2,3.
2. Ask that local zoning office to confirm the district, allowed dwelling type, required yards, height and lot coverage³.
3. Confirm whether the state, county or local government is the building-code enforcing agency for the parcel¹.
4. Ask the Monroe County Road Commission whether the driveway work needs a permit; new, widened, moved, replaced, surfaced or resurfaced driveways are among the activities that may require one¹⁷.
5. If sanitary sewer is unavailable, obtain the county septic permit and site assessment before construction^4,5.
6. Apply to the assigned building authority, build to the Michigan codes and complete the required inspections^1,9.
7. Request the Certificate of Occupancy after the permitted work is complete and fees are paid⁷.

Before buying, obtain the parcel's local zoning map and district rules because Monroe County has no county-level zoning authority and each city, village or township controls its own zoning^2,3. Confirm the assigned building authority and ask the Monroe County Road Commission about access; new, widened, replaced, moved, surfaced and resurfaced driveways may require a permit^1,17. With only 0.3% of county soils rating free of severe limits for a conventional drain field, obtain the county site assessment before treating the parcel as buildable⁸. Ask EGLE and the local government about floodplain limits if the parcel touches a regulated river, stream or drain; new residential construction is prohibited in a regulated floodway¹⁸. For subdivision roads intended for Road Commission jurisdiction, the owner or applicant must submit site plans to the Road Commission³. Farmland runs about $6,275 an acre, and the effective property-tax rate is about 1.2%⁸.