Building permits, zoning and land rules in Redwood County, Minnesota

Yes, on land outside city limits. Redwood County requires a county building permit (called a zoning permit on the county's forms) for a new structure, addition, moved structure or rebuilding in the same location¹. Buildings and structures with a footprint larger than 100 square feet require a permit, and an issued permit lasts one year¹.

Internal remodeling, replacement windows and doors, roofing, siding, and refacing an existing advertising or business sign do not require this county permit¹.

Inside a city the county permit does not decide the question. Inside Redwood Falls, the city requires building permits under its adopted building code³ and runs its own zoning⁴. Properties in other municipalities, Paxton Township, the Lower Sioux Community or within 2 miles of Redwood Falls should contact that jurisdiction too¹.

The Minnesota State Building Code sets minimum construction standards statewide, but we could not confirm how Redwood County adopts or enforces it, or whether ordinary building inspections apply on unincorporated land¹⁰. Ask the Environmental Office before work begins⁵.

In unincorporated Redwood County, the Redwood County Environmental Office issues the county zoning permit, which its forms page labels as a building permit⁵. The office is at the Redwood County Government Center, 403 South Mill Street, P.O. Box 130, Redwood Falls, MN 56283, phone 507-637-4023⁵. Inside Redwood Falls, building permits come from the city instead³.

The landowner generally applies, because the permit requires the landowner's signature, though a contractor may submit it⁵. Applications go to the Zoning Administrator on county forms, may need duplicate scale drawings, and work cannot begin until the permit is granted⁶. Some requests also go to the Board of Adjustment, Planning Commission or County Board⁶.

The published fee schedule lists the zoning permit at $40 plus 0.1% for construction of $150,000 or more, a new-home permit at $100, a septic permit at $200 and a subdivision permit at $700⁵. After-the-fact permits double the rates, except for decks and patios⁵.

Yes, outside incorporated municipalities. The Redwood County Environmental Office administers the county zoning ordinance there^2,11. Municipalities may have their own zoning; Redwood Falls adopts and administers its own through its Unified Development Ordinance⁴. Standards inside the county's zoning vary by district and shoreland classification².

For lots on on-lot utilities, one reviewed standard requires at least 2.5 acres, 150 feet of width at the building setback line and 200 feet of depth, with an exception for legal nonconforming lots⁶. Buildings may cover no more than 50% of the lot area under one reviewed standard⁶.

Setbacks depend on district and use. One reviewed standard sets a front yard of at least 67 feet from the right-of-way of a public road, 100 feet along four-lane highways, and 30 feet from a bluffline⁶. Setbacks also apply from county ditches and tile, property lines, septic systems and wells¹.

The county defines a dwelling as two or more rooms with permanently installed bathroom and kitchen facilities; camper trailers and tents are not dwellings⁶. State code requires habitable rooms of at least 70 square feet and 7 feet in each direction, kitchens excepted, but we found no overall minimum home size⁷.

Septic permits in Redwood County come from the County Environmental Office, not a city building department, wherever county jurisdiction applies. The county covers all land except incorporated areas or townships that run an approved program at least as strict as the county's². A permit is required before constructing, installing, modifying or replacing a septic system, and the published fee is $200^2,5. Septic permits are separate from the building or zoning permit, including inside Redwood Falls, whose building and zoning authority does not by itself cover septic³.

County inspections cover new and replacement systems, including soil review before design and inspections when the tank and distribution pipes are placed⁶. The owner or installer must notify the Department 24 hours before permitted work, and required components generally cannot be backfilled before inspection¹¹. Minnesota does not require a compliance inspection of an existing system at sale, though many local ordinances do; ask the Environmental Office what applies¹².

Only about 2.5% of county soils are rated without limits for a conventional drain field, so plan for site evaluation and possibly an engineered system⁹.

We could not confirm a general Redwood County rule allowing or prohibiting long-term RV residence, temporary camping or tiny-home occupancy on private land. Ask the Environmental Office for a written answer tied to the parcel's district⁵. The county definition of a dwelling excludes house trailers, camper trailers, camper buses and tents⁶.

The county regulates RV placement in floodway and flood-fringe districts: some RVs qualify when placed on fill above the flood protection elevation, others need conditional-use approval and an evacuation plan. These provisions do not establish general residential occupancy⁶. New or replacement manufactured homes in floodplain districts are treated as new structures and must be elevated and anchored⁶.

Minnesota defines a tiny house as a dwelling of 400 square feet or less, excluding lofts, and requires it to meet the Minnesota Residential Code⁷. A tiny home that qualifies as a single-family dwelling may be considered in the R-1 Rural Residential District with a site plan showing floor plans, septic and well, but the ordinance text we found is hosted as a county draft, so confirm it is adopted¹¹. A structure over 100 square feet also needs the county permit¹.

1. Confirm jurisdiction. Find out whether the parcel is unincorporated, inside Redwood Falls (city permits and zoning)³, or under another municipality, Paxton Township, the Lower Sioux Community or the area within 2 miles of Redwood Falls¹.
2. Check the parcel with the Environmental Office. Confirm district, lot dimensions, setbacks and any shoreland or floodplain controls^2,6.
3. Apply for the zoning (building) permit. The landowner signs, duplicate scale drawings may be required, and work cannot start before approval^5,6.
4. Resolve wastewater. Confirm who has septic jurisdiction, then obtain the septic permit and inspections^2,11.
5. Resolve access. The Redwood County Highway Department takes county highway permit applications online¹³.
6. Confirm code review. Ask which state building-code inspections, trade permits and occupancy approvals apply¹⁰.

A qualifying owner-builder may be exempt from Minnesota contractor licensing, but not from zoning, septic or other permits⁸.

Start with buildability, wastewater, flood risk and legal access. Lot standards vary by district; for lots on on-lot utilities, one reviewed standard uses 2.5 acres, 150 feet of width and 200 feet of depth, with exceptions⁶. Only about 2.5% of county soils are rated without drain-field limits, so a conventional septic field is not a safe assumption⁹.

Ask the Environmental Office for the district, dimensional rules, septic jurisdiction and mapped shoreland or floodplain status⁵. Residential subdivisions without public water and sewer must show domestic water and sewage treatment for every lot, and a subdivision permit is $700^5,6. Floodplain development, fill, excavation and storage require a permit².

Minnesota requires a well notification and filing fee before most water-supply wells are built, though we could not confirm any Redwood County well rule¹⁴. Confirm who controls the road entrance; a driveway onto a state trunk highway needs a MnDOT permit¹⁵. The median property-tax bill is about $1,444 per year⁹.