Trempealeau County, Wisconsin
Osseo is a city in Trempealeau County, Wisconsin. Osseo adopts its own zoning, so inside its limits Osseo’s rules apply, not the county’s. 11 rules below are quoted from official sources and independently re-checked, most recently on November 12, 2026. Rules for unincorporated land are on the Trempealeau County page.
Land inside Osseo city, Trempealeau County, WI
“this chapter is adopted under the authority granted by sections 62.23(7) and 87.30 of the wisconsin statutes and amendments thereto.”
Zoning districts inside Osseo city
basic zoning districts: 18 districts (item (9) reserved for future use)
“the city of osseo is hereby divided into the following eighteen (18) basic zoning districts: (1) a-1 agricultural/holding district (2) r-1 single-family residential district (low density) (3) r-2 single-family residential district (medium density)”
R-1 single-family residential district (low density, no public sewer), Osseo city
minimum lot area: >= 20000 square feet · minimum lot width: >= 160 feet (unless zoning administrator approves alternative sewage disposal)
“(1) minimum lot area. twenty thousand (20,000) square feet. (2) minimum lot width. one hundred sixty (160) feet, unless the zoning administrator approves an alternative method of sewage disposal.”
“(1) minimum lot area. eight thousand (8,000) square feet. (2) minimum lot width. eighty (80) feet.”
“(1) lot frontage. minimum two hundred (200) feet. (2) lot area. minimum two (2) acres.”
R-1 single-family residential district, Osseo city
front setback: >= 20 feet · rear setback, principal structure: >= 30 feet · rear setback, accessory/detached garage: >= 12 feet · side setback: >= 8 feet (each side)
“(3) front setback. twenty (20) feet from city's right-of-way. (4) rear setback. minimum thirty (30) feet for principal structure; minimum twelve (12) feet for accessory buildings and detached garages. (5) side setback. minimum eight (8) feet each side.”
“(3) front setback. twenty (20) feet from city's right-of-way. (4) rear setback. ten (10) feet. (5) side setback. five (5) feet each.”
“(3) front setback. twenty (20) feet from city's right-of-way. (4) rear setback. one hundred (100) feet for all agricultural buildings and ten (10) feet for residential buildings.”
R-1 single-family residential district, Osseo city
maximum ground coverage by all structures: <= 40 percent of lot area
“(9) percent ground coverage by all structures. no more than forty percent (40%) coverage of lot area.”
R-1 single-family residential district, Osseo city
maximum height: <= 35 feet (or three stories)
“(6) height. three (3) stories or thirty-five (35) feet.”
Manufactured homes in the R-1 district, Osseo city (R-2 has identical conditions)
minimum width: >= 24 feet · minimum length: >= 36 feet
“manufactured homes complying with all of the following requirements and limitations: a. the home shall be a double wide of at least twenty-four (24) feet in width and thirty-six (36) feet in length.”
We looked and could not find an official answer yet. Silence is not permission; ask Osseo or Trempealeau 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 Osseo publishes no rule on the point, not that none exists. Trempealeau County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Osseo means bringing your own water and power. The kit we’d start with:
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