Unincorporated Redwood County, Minnesota requires a county zoning permit, which the county's own forms call a building permit, for new structures, additions, moved structures and rebuilding1. The Environmental Office administers zoning outside incorporated municipalities2 and issues septic permits unless an approved city or township program applies3. Inside Redwood Falls, the city issues its own building permits4 and sets its own zoning5.
At a glance
- Building permit
- Required in unincorporated areas for new structures over 100 sq ft, additions and moves; $100 for a new home16
- Zoning
- County zoning outside incorporated cities; Redwood Falls zones its own land25
- Septic
- County permit required before installation; $200 fee768
- Minimum lot
- District-specific; a reviewed standard requires 2.5 acres, with exceptions9
- Minimum home size
- No overall minimum floor area confirmed; habitable rooms need 70 sq ft10
- RV living / tiny home
- Not confirmed; ask the Environmental Office for the parcel's district rule118
- Owner-builder
- State contractor-license exemption may apply, but permits still apply12
- Median property tax
- About $1,444 per year13
Who to call
Zoning
Redwood County Environmental Office
County zoning permits, zoning administration, septic design approval and septic inspections
Redwood County Government Center 403 South Mill Street, P.O. Box 130 Redwood Falls, MN 56283
Roads & driveways
Redwood County Highway Department
Online applications for Redwood County highway permits
Redwood County Highway Department 1820 East Bridge Street Redwood Falls, MN 56283
Contact details are copied from each office’s official page and were checked against it on October 13, 2026.
Off-grid gear
Going off-grid in Redwood County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit 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 location.1 Buildings and structures with a footprint larger than 100 square feet require a permit, and an issued permit lasts one year.1
Internal remodeling, replacement windows and doors, roofing, siding, and refacing an existing advertising or business sign do not require this county permit.1
Inside a city the county permit does not decide the question. Inside Redwood Falls, the city requires building permits under its adopted building code4 and runs its own zoning5. Properties in other municipalities, Paxton Township, the Lower Sioux Community or within 2 miles of Redwood Falls should contact that jurisdiction too.14
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 land.15 Ask the Environmental Office before work begins.8
Who issues building permits in Redwood County?
In unincorporated Redwood County, the Redwood County Environmental Office issues the county zoning permit, which its forms page labels as a building permit.8 The office is at the Redwood County Government Center, 403 South Mill Street, P.O. Box 130, Redwood Falls, MN 56283, phone 507-637-4023.8 Inside Redwood Falls, building permits come from the city instead.4
The landowner generally applies, because the permit requires the landowner's signature, though a contractor may submit it.16 Applications go to the Zoning Administrator on county forms, may need duplicate scale drawings, and work cannot begin until the permit is granted.17 Some requests also go to the Board of Adjustment, Planning Commission or County Board.17
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 $700.6 After-the-fact permits double the rates, except for decks and patios.6
Does Redwood County have zoning?
Yes, outside incorporated municipalities. The Redwood County Environmental Office administers the county zoning ordinance there.218 Municipalities may have their own zoning; Redwood Falls adopts and administers its own through its Unified Development Ordinance.5 Standards inside the county's zoning vary by district and shoreland classification.19
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 lots.9 Buildings may cover no more than 50% of the lot area under one reviewed standard.20
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 bluffline.2122 Setbacks also apply from county ditches and tile, property lines, septic systems and wells.23
The county defines a dwelling as two or more rooms with permanently installed bathroom and kitchen facilities; camper trailers and tents are not dwellings.24 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 size.10
Who issues septic permits in Redwood County?
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's.3 A permit is required before constructing, installing, modifying or replacing a septic system, and the published fee is $200.76 Septic permits are separate from the building or zoning permit, including inside Redwood Falls, whose building and zoning authority does not by itself cover septic.4
County inspections cover new and replacement systems, including soil review before design and inspections when the tank and distribution pipes are placed.25 The owner or installer must notify the Department 24 hours before permitted work, and required components generally cannot be backfilled before inspection.26 Minnesota does not require a compliance inspection of an existing system at sale, though many local ordinances do; ask the Environmental Office what applies.27
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 system.28
Can you live in an RV or tiny home in Redwood County?
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 district.8 The county definition of a dwelling excludes house trailers, camper trailers, camper buses and tents.24
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 occupancy.29 New or replacement manufactured homes in floodplain districts are treated as new structures and must be elevated and anchored.30
Minnesota defines a tiny house as a dwelling of 400 square feet or less, excluding lofts, and requires it to meet the Minnesota Residential Code.31 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 adopted.32 A structure over 100 square feet also needs the county permit.1
Building a home in Redwood County: what are the steps?
- Confirm jurisdiction. Find out whether the parcel is unincorporated, inside Redwood Falls (city permits and zoning)4, or under another municipality, Paxton Township, the Lower Sioux Community or the area within 2 miles of Redwood Falls.14
- Check the parcel with the Environmental Office. Confirm district, lot dimensions, setbacks and any shoreland or floodplain controls.193322
- Apply for the zoning (building) permit. The landowner signs, duplicate scale drawings may be required, and work cannot start before approval.1617
- Resolve wastewater. Confirm who has septic jurisdiction, then obtain the septic permit and inspections.326
- Resolve access. The Redwood County Highway Department takes county highway permit applications online.34
- Confirm code review. Ask which state building-code inspections, trade permits and occupancy approvals apply.15
A qualifying owner-builder may be exempt from Minnesota contractor licensing, but not from zoning, septic or other permits.12
What should you check before buying land in Redwood County?
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 exceptions.9 Only about 2.5% of county soils are rated without drain-field limits, so a conventional septic field is not a safe assumption.28
Ask the Environmental Office for the district, dimensional rules, septic jurisdiction and mapped shoreland or floodplain status.8 Residential subdivisions without public water and sewer must show domestic water and sewage treatment for every lot, and a subdivision permit is $700.356 Floodplain development, fill, excavation and storage require a permit.36
Minnesota requires a well notification and filing fee before most water-supply wells are built, though we could not confirm any Redwood County well rule.37 Confirm who controls the road entrance; a driveway onto a state trunk highway needs a MnDOT permit.38 The median property-tax bill is about $1,444 per year.13
Watch-outs
- A county permit does not settle the question inside Redwood Falls, other municipalities, the Lower Sioux Community, Paxton Township or within 2 miles of Redwood Falls.144
- Only about 2.5% of county soils are rated without limits for a conventional septic drain field, so investigate wastewater feasibility before treating a parcel as buildable.28
- Floodplain rules can affect structures, fill, excavation, storage, subdivisions, RVs and manufactured homes.36392930
- Long-term RV residence, tiny-home occupancy, private-well rules, building inspections and certificates of occupancy remain unconfirmed; ask the Environmental Office which authorities apply to the parcel.8
- A use that is not listed as permitted or conditional in a Redwood County zoning district is treated as prohibited, so confirm the use before buying.32
Sources
- 2023 Building Permit Reminders - Redwood County, MN, quoted and re-checked
- Draft Redwood County Zoning Ordinance, quoted and re-checked
- Draft Redwood County Zoning Ordinance, quoted and re-checked
- Redwood Falls: Building Department (Redwood County), quoted and re-checked
- Redwood Falls: Redwood Falls Code §14.01, Unified Development Ordinance (Redwood County), quoted and re-checked
- Environmental Office - Redwood County, MN, quoted and re-checked
- Draft Redwood County Zoning Ordinance, quoted and re-checked
- Redwood County Environmental Office (redwoodcounty-mn.gov)
- Redwood County Zoning Ordinance, quoted and re-checked
- Tiny Houses and the 2020 Minnesota Residential Code, quoted and re-checked
- Environmental Office - Redwood County, MN, quoted and re-checked
- Minnesota Statutes § 326B.805: Residential contractor licensing exemptions, quoted and re-checked
- Median property tax bill: Bolthole Index county data
- Draft Redwood County Zoning Ordinance, quoted and re-checked
- 2020 Minnesota State Building Codes, quoted and re-checked
- Environmental Office - Redwood County, MN, quoted and re-checked
- Redwood County Zoning Ordinance, quoted and re-checked
- Title XV: Land Usage, Redwood County Code of Ordinances, quoted and re-checked
- Environmental Office - Redwood County, MN, quoted and re-checked
- Redwood County Code - Title XV: Land Usage, quoted and re-checked
- Redwood County Code - Title XV: Land Usage, quoted and re-checked
- Redwood County Code Title XV: Land Usage, quoted and re-checked
- 2023 Building Permit Reminders - Redwood County, MN, quoted and re-checked
- Redwood County - Land Usage, quoted and re-checked
- Environmental Office - Redwood County, MN, quoted and re-checked
- Title XV: Land Usage, Redwood County Code of Ordinances, quoted and re-checked
- Disclosing SSTS at property transfer (Minnesota statewide rule), quoted and re-checked
- Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
- Redwood County Code - Title XV: Land Usage, quoted and re-checked
- redwoodcounty-mn.gov, quoted and re-checked
- Tiny Houses and the 2020 Minnesota Residential Code, quoted and re-checked
- Draft Redwood County Zoning Ordinance, quoted and re-checked
- Redwood County Code Title XV: Land Usage, quoted and re-checked
- Redwood County Highway Department (redwoodcounty-mn.gov)
- redwoodcounty-mn.gov, quoted and re-checked
- Redwood County Zoning Ordinance, quoted and re-checked
- 2025 Minnesota Statutes, section 103I.205: Well Construction (Minnesota statewide rule), quoted and re-checked
- Access / Driveway Permit (Minnesota statewide rule), quoted and re-checked
- Redwood County Code Title XV: Land Usage, quoted and re-checked
Written October 13, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.