Winona County, Minnesota requires building permits for code-regulated work where the state permit rule applies; the building official varies by jurisdiction1. Unincorporated Winona County has zoning, with separate township administration in Wilson, Saratoga, St. Charles and Utica23. Winona County Planning & Environmental Services handles county septic applications; Construction Management Services handles septic permitting in Saratoga, St. Charles and Utica townships4.
At a glance
- Building permit
- Required before code-regulated work; the building official and local process vary by jurisdiction1
- Zoning
- County-enforced outside cities, with separate administration in specified townships25
- Septic
- Approval and an installation inspection are required; three townships use Construction Management Services674
- Owner-builder
- The state contractor-license exemption applies when the owner will occupy the home or retain it as a rental, but it does not waive permits89
- Driveway access
- A county access permit is required before constructing, improving or changing an access on a road under county jurisdiction10
- Floodplain work
- A floodplain permit is required for covered work such as a house, fill, culvert or bridge in a floodplain1112
- Water wells
- A notification or permit is required before regulated well work where a delegated well program applies; confirm the correct authority13
- RV or tiny home living
- Countywide residential occupancy rules could not be confirmed; ask the office serving the parcel before placement14
Who to call
Zoning
Winona County Planning & Environmental Services
County-administered zoning certificates, land-use review, septic permits, floodplain and shoreland matters
202 W Third Street, Winona, MN 55987
Zoning
Construction Management Services
Zoning and septic permitting for Saratoga, St. Charles and Utica townships
Roads & driveways
Winona County Highway Department
Access permits for county state-aid highways and county roads under Winona County jurisdiction
5300 Highway 61 West, Winona, MN 55987
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 Winona 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 Winona County, Minnesota?
In Winona County, the Minnesota permit rule requires an application to the building official and the required building permit before code-regulated construction, alterations, demolition or changes of occupancy; local administration varies1. The Minnesota State Building Code is the statewide minimum construction standard, but local enforcement depends on adoption by ordinance15. One-story detached storage sheds, playhouses and similar accessory structures no larger than 200 square feet are among the building-permit exemptions; county development-certificate requirements are separate116. Inside Goodview and Lewiston, the cities issue building permits1718. City building approval does not replace onsite-septic approval through Winona County Planning & Environmental Services19.
Who handles building permits and zoning applications in Winona County?
Winona County Planning & Environmental Services issues county zoning certificates and septic permits; a zoning certificate is separate from a building-code permit issued by the applicable building official2021. Contact the county planning office at 202 W Third Street, Winona, MN 55987, or 507-457-652020. Every Winona County permit application is submitted through the county's online permitting system, with fees paid online by e-check or credit card and email progress notices as the application moves2223. Construction Management Services handles zoning and septic applications in Saratoga, St. Charles and Utica townships; call 507-282-8206 or email planning@tpamn.org24. Incorporated cities administer planning and zoning within city limits, and Wilson Township runs its own zoning process, so applications for those parcels do not go through the county system22.
Does Winona County have zoning?
Unincorporated Winona County has county zoning districts, while Wilson Township and incorporated municipalities administer their own zoning regulations2. Goodview and Lewiston have their own city zoning; onsite-septic regulation remains with Winona County Planning rather than moving with city zoning approval252619. Saratoga, St. Charles and Utica townships use Construction Management Services for zoning and septic permitting3. The county map distinguishes agricultural, business, community-development, industrial and residential districts27. County variance requests go to the Board of Adjustment; conditional/interim use applications and zoning amendments go through Planning Commission review and a Board of Commissioners vote23. We could not confirm district-specific minimum dwelling sizes, lot sizes, setbacks, height limits or accessory-dwelling rules; ask the zoning administrator serving the parcel before finalizing a site plan5.
How do septic permits work in Winona County?
Winona County Planning regulates subsurface sewage treatment system design, permitting, installation and inspection under the county zoning ordinance and authority from the Minnesota Pollution Control Agency19. The county septic application lists a $350 fee plus site-evaluation, soil-log, design and management-plan materials6. The installation must also be inspected under the county ordinance7. Saratoga, St. Charles and Utica townships use Construction Management Services for septic permitting beginning in early 2026, although project-specific county or state permits may still apply4. Systems designed for more than 10,000 gallons per day require an MPCA permit28. Only about 8.5% of Winona County soils are rated without severe limitations for a conventional drain field, so make the soil evaluation an early feasibility check29.
Can you live in an RV or tiny home on land in Winona County?
We could not confirm a rule allowing long-term RV occupancy or temporary camping on private land in unincorporated Winona County; ask Winona County Planning & Environmental Services, or the township administrator serving the parcel, about occupancy, placement and sanitation before relying on an RV homesite520. A tiny house used as a dwelling must meet the Minnesota Residential Code, while local zoning determines whether the dwelling is allowed on the parcel30. We could not confirm Winona County's local tiny-home occupancy standards; building-code compliance alone does not establish zoning approval30.
Building a home in Winona County: the steps, in order
- Identify the parcel's township and zoning administrator because the county, specified townships and incorporated cities use different processes3.
- Apply to the building official and obtain the required building permit before code-regulated work begins1.
- Submit county permit applications through the online permitting system, which collects fees by e-check or credit card; parcels in a city, Wilson Township or the three Construction Management Services townships follow that jurisdiction's process instead223.
- Budget for the county fees that fit the project; the 2026 schedule lists $200 for a development-certificate application, $500 for a new dwelling or commercial structure, and $200 for an accessory structure31.
What should you check before buying land in Winona County?
Check the parcel's jurisdiction first because zoning and septic administration changes among the county, certain townships and incorporated cities5. Then verify the mapped zoning district, road authority, floodplain status, septic feasibility and well-permit authority with the offices that will review the project3210121913. A proposed land division needs an early county conversation because the County Surveyor checks subdivision plats and new land splits require a filed survey33. About 63.9% of county land has a slope of 15% or less, while about 41.4% is wooded, so parcel-level topography and clearing needs can differ sharply from county averages3435.
Watch-outs
- Do not start code-regulated work with only a zoning certificate; the required building permit must come from the applicable building official121.
- Winona County's online system takes county permit applications only; cities, Wilson Township and the Construction Management Services townships run separate processes223.
- Most Winona County soils have severe limitations for a conventional drain field, so secure a site evaluation before committing to a house location29.
Sources
- 1300.0120 - Permits, quoted and re-checked
- Planning & Zoning, quoted and re-checked
- Online Permitting, quoted and re-checked
- Septic Systems, quoted and re-checked
- Online Permitting, quoted and re-checked
- Septic Systems, quoted and re-checked
- Septic Systems, quoted and re-checked
- 2025 Minnesota Statutes, Section 326B.805, quoted and re-checked
- Residential contractor licensing, quoted and re-checked
- Winona County Highway Department (winonacounty.gov)
- Floodplain Regulations (Minnesota statewide rule), quoted and re-checked
- Board of Adjustment, quoted and re-checked
- 4725.1810 - Permits and Notifications, General, quoted and re-checked
- Online Permitting, quoted and re-checked
- Overview of the Minnesota State Building Code, quoted and re-checked
- Winona County Planning & Zoning (2026 county census)
- Goodview: Building Permits - Goodview, Minnesota (Winona County), quoted and re-checked
- Lewiston: City of Lewiston City Code (Winona County), quoted and re-checked
- Septic Systems, quoted and re-checked
- Winona County Planning & Environmental Services (winonacounty.gov)
- Minnesota State Building Code Adoption Guide (Minnesota statewide rule), quoted and re-checked
- Online Permitting, quoted and re-checked
- Online Permitting, quoted and re-checked
- Construction Management Services (winonacounty.gov)
- Goodview: Ordinances - Goodview, Minnesota (Winona County), quoted and re-checked
- Lewiston: City of Lewiston City Code (Winona County), quoted and re-checked
- Winona County Zoning 2023, quoted and re-checked
- SSTS design (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
- Tiny Houses and the 2020 Minnesota Residential Code (Minnesota statewide rule), quoted and re-checked
- 2026 Winona County Fee Schedule, quoted and re-checked
- Planning & Zoning, quoted and re-checked
- County Surveyor, quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
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.