Gratiot County, Michigan
Sumner Township is a township in Gratiot County, Michigan. Sumner Township has not adopted its own zoning; the county’s or state’s rules apply inside its limits. Septic permits inside Sumner Township come from Sumner Township. 22 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Gratiot County page.
Sumner township's own zoning ordinance: the county list does not show Sumner as self-zoned; county zoning applies instead
“gratiot county administers planning and zoning for 6 townships in the county, including: elba hamilton lafayette newark north star sumner all other townships and cities are self-zoned.”
Sumner Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Homeowner doing their own construction on a building permit application in Sumner township
“note section 4, if the homeowner is doing the construction, enter “homeowner” in the contractor information space.”
Building work in Sumner township permitted by the Gratiot County Permits Office
“final inspection: ▪ made upon completion of the building/structure, and before occupancy occurs.”
New or altered buildings in Sumner township
“a new building or altered building shall not be used/occupied until a certificate of occupancy is issued by the code official.”
Zoning districts that apply in Sumner township under county zoning
“gratiot county zoning ordinance chapter 4 ag – agricultural district”
Principal uses in the AG agricultural district inside Sumner township (county zoning)
minimum lot area: >= 40 acres (parcels divided under section 4.5(a)(1)-(2))
“a. lot area: the minimum lot size in this district shall be forty (40) acres, except as noted in subsection 4.5, a, 1 & 2 below.”
“a. lot area: the minimum lot size in this district shall be two (2) acres.”
Principal buildings in the AG agricultural district inside Sumner township (county zoning)
front yard setback: >= 50 feet · rear yard setback: >= 50 feet · side yard setback: >= 20 feet
“c. front yard: the minimum front yard setback in this district shall be fifty (50) feet.”
“c. front yard: the minimum front yard setback in this district shall be sixty (60) feet.”
Buildings on a parcel in the AG agricultural district inside Sumner township (county zoning)
maximum lot coverage: <= 20 percent of parcel
“g. lot coverage: the total area of all buildings on the parcel shall not exceed a maximum of twenty (20) percent of the parcel size.”
“g. lot coverage: the total area of all buildings on the parcel shall not exceed a maximum of thirty (30) percent of the parcel size.”
Principal buildings in the AG agricultural district inside Sumner township (county zoning)
maximum building height: <= 35 feet (or two and one-half (2 1/2) stories, whichever is less)
“f. building height: no principal building in this district shall exceed a height of thirty-five (35) feet, or two and one-half (2 ½) stories, whichever is less.”
“f. building height: no principal building in this district shall exceed a height of thirty (30) feet, or two (2) stories, whichever is less.”
On-site septic systems serving land inside Sumner township
“septic and well permit (when applicable) ▪ contact the mid-michigan health department at (989) 875-3681 or visit their office located at 151 commerce dr., ithaca, mi 48847.”
Septic systems for new construction in Sumner township, when applicable
“a copy of the well and septic permit is required.”
Private wells for new construction in Sumner township, when applicable
“a copy of the well and septic permit is required. existing well and septic systems may be used, however, a copy of the well or septic evaluation must be submitted if the system is older than 10 years and has not been in use.”
Site condominium developments inside Sumner township
public water and sewer distance: <= 300 feet (from the property boundary of the overall development)
“b. all sites shall be required to use public water and sanitary sewer service if located and available within three hundred (300) feet of the property boundary of the overall development.”
Division of parcels into two or more lots inside Sumner township
“c. division of lots - the division of a parcel of land into two (2) or more lots or parcels shall require the approval of the individual or body designated within the township in which the parcel is located.”
Driveway or curb cut connecting to a county road in Sumner township
“driveway permit ▪ only when applicable ▪ contact gratiot county road commission at (989) 875-3811 for information on these permits, curb cuts, or any activity affecting county roads.”
Human-occupancy buildings in designated flood plain areas inside Sumner township
“no building for human occupancy shall be erected or hereafter occupied, if vacant, in such designated flood plain areas.”
Building permit process for Sumner township, administered by the Gratiot County Permits Office
“township zoning permit (a copy of zoning permit or letter of township approval is required before a building permit can be issued.)”
We looked and could not find an official answer yet. Silence is not permission; ask Sumner Township or Gratiot County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Sumner Township publishes no rule on the point, not that none exists. Gratiot County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Sumner Township means bringing your own water and power. The kit we’d start with:
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