Dunn County, Wisconsin
Town of Grant is a town in Dunn County, Wisconsin. Septic permits inside Town of Grant come from Dunn County (Dunn County Planning & Land Use — Sanitation · 715-231-6520). 12 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Dunn County page.
Town of Grant does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
One- and two-family dwellings built inside Grant town (Uniform Dwelling Code, state-administered)
“adopt rules which establish standards for the construction and inspection of one- and 2-family dwellings and components thereof.”
Zoning districts of Dunn County Chapter 13 that apply to land inside Grant town (county zoning administered by Dunn County in towns that have not excluded Grant)
“dunn county's chapter 13 comprehensive zoning ordinance applies to all towns and unincorporated areas, except the towns of eau galle, elk mound, new haven, rock creek, sand creek, and springbrook.”
Residential district R1 (standards shared by R1, R2, R3 and SR) for a lot inside Grant town that is not served by community sewer
minimum lot area: >= 1 acre (excluding road right-of-way; lots not served by community sewer) · minimum lot width: >= 85 feet (lots not served by community sewer; measured at highway or building setback line)
“lots not served by community sewer shall be a minimum of one acre excluding road right-of-way and a minimum of 85 feet wide at the highway or building setback line.”
“lots served by community sewer shall be a minimum of 10,000 square feet and a minimum of 60 feet wide at the highway or building setback line.”
“the minimum lot size for non-farm single / two family residence and non-farm residential cluster shall be one acre in the ia and pa districts.”
Primary agriculture district PA (standards shared by IA, PA and GA) for principal structures inside Grant town
side yard setback (principal structure): >= 10 feet · rear yard setback (principal structure): >= 25 feet
“the minimum side yard setback shall be 10 feet for principal structures.”
“the minimum side yard setback shall be 10 feet for principal structures.”
Residential district R1 (standards shared by R1, R2, R3 and SR) inside Grant town
maximum height, principal and accessory structure: <= 35 feet (agricultural structures in agricultural districts)
“the maximum height for principal and accessory structure shall be 35 feet.”
“the maximum height of a residential structure shall be 35 feet”
Recreational vehicles on a lot inside Grant town under Dunn County Chapter 13 (general provisions apply to all zoning districts)
maximum RV dimension (defines mobile recreational vehicle): <= 400 square feet (largest horizontal projection)
“a mobile recreational vehicle shall not be used as a permanent principal residence, and is defined as:”
Private onsite sanitary (septic / POWTS) systems on land inside Grant town
“dunn county's shoreland, floodplain, land division, and sanitary ordinances apply to all towns in dunn county.”
Land divisions of land inside Grant town
“dunn county's shoreland, floodplain, land division, and sanitary ordinances apply to all towns in dunn county.”
We looked and could not find an official answer yet. Silence is not permission; ask Town of Grant or Dunn 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 Town of Grant publishes no rule on the point, not that none exists. Dunn County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of Grant means bringing your own water and power. The kit we’d start with:
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