Unincorporated Houston County, Minnesota requires a permit from the Zoning Administrator for buildings and other listed development in county floodplain districts; the available county rule does not establish that every home elsewhere needs the same county permit1. The county administers zoning in the townships, while Houston County Environmental Services handles septic permitting where the county program applies23.
At a glance
- Building permit
- Required for listed development in county floodplain districts; a general countywide requirement was not confirmed1
- Zoning
- Houston County administers its zoning ordinance in the townships2
- Septic permits
- The county administers SSTS permits where a city or township does not operate a compliant local program4
- RV living
- Long-term occupancy on a private parcel is unconfirmed; ask Planning & Zoning2
- Tiny homes
- No specific county occupancy rule was confirmed; district and septic rules still matter53
- Owner-builder
- A qualifying owner may be exempt from contractor licensing, but not from applicable permits6
- Manufactured homes
- County rules vary by district and use; parks need a permit and temporary farm dwellings have conditions7
Who to call
Zoning
Houston County Planning & Zoning
Planning and zoning in Houston County townships, including floodplain, shoreland, septic-system and feedlot regulation
304 S. Marshall St. Caledonia, MN 55921
Contact details are copied from each office’s official page and were checked against it on September 28, 2026.
Do you need a building permit in Houston County, Minnesota?
Houston County requires a permit from the Zoning Administrator before erecting, adding to, modifying, rehabilitating or altering a building in a county floodplain district1. The floodplain permit also reaches listed work such as on-site septic construction, fill, excavation and certain watercourse activity8. We could not confirm a blanket Houston County building-permit requirement for every home outside those floodplain districts, so ask Planning & Zoning which approvals apply to the parcel and project9.
The Minnesota State Building Code is the statewide construction standard for covered buildings, but municipal enforcement generally depends on local adoption and statutory enforcement rules10. Where the code is administered, the certified building official reviews code requirements and issues the building permit; zoning approval remains a separate question11. A qualifying owner who builds or improves residential property for personal occupancy or retention as a rental may use Minnesota's contractor-licensing exemption, but that exemption does not waive applicable permits or inspections6.
Who handles Houston County building and zoning permits?
Houston County Planning & Zoning is the first call for a rural building proposal because the office administers planning and zoning in the townships, including floodplain, shoreland, septic-system and feedlot regulation9. The office is at 304 S. Marshall St. in Caledonia; call 507-725-5800 or email [email protected]9. The county page says staff can assist with zoning-permit applications or discuss building proposals9.
Houston County's published material does not identify a general county building inspector or inspection schedule. For work subject to an administered State Building Code permit, only the responsible certified building official can approve code requirements and issue that permit11. Ask Planning & Zoning to identify the correct building official for the parcel before commissioning final plans, especially if the property is inside a city rather than a township29.
Does Houston County, Minnesota have zoning?
Yes. Houston County develops, coordinates and enforces its zoning ordinance in the townships, including floodplain and shoreland rules29. The ordinance publishes different provisions for agricultural, residential, business, industrial, floodplain, shoreland and other districts, so an allowed use or setback in one district should not be assumed to apply in another5.
Have Planning & Zoning identify the parcel's base district and any floodplain or shoreland controls before relying on a listing description9. Houston County's reviewed rules do not establish one general minimum dwelling size, a countywide utility-connection rule or a complete agricultural-building exemption. The county's manufactured-home provisions are more specific: standards vary by setting, a manufactured-home park needs a valid permit, and a temporary farm dwelling is allowed only under stated agricultural or family-worker conditions7. Land inside a city can be governed by city rules rather than the township program described here, so confirm jurisdiction before applying2.
How do septic permits work in Houston County?
Houston County administers the SSTS program where the county ordinance applies, including unincorporated areas and places without a compliant city or township program; new and replacement systems require permits4. The Planning & Zoning page places septic-system forms and assistance alongside the county's land-use program, making that office the practical starting point9. A city or township may administer its own compliant program, so confirm the actual authority before paying for a design4.
Minnesota local governments review designs and issue construction permits for most septic systems, while the MPCA handles large systems designed above 10,000 gallons per day12. Site conditions deserve early attention: only 8.5% of mapped Houston County soils are rated without severe limitations for a conventional drain field13. That statistic does not decide whether a particular lot can support septic, but it makes a site evaluation important before fixing the house location13.
Can you live in an RV or tiny home in Houston County?
We could not confirm a Houston County rule that generally allows or prohibits full-time RV living on a private rural parcel. Ask Planning & Zoning for a parcel-specific answer because the county administers district, floodplain and shoreland rules in the townships29. Minnesota's recreational-camping-area license applies to an area accommodating five or more tents or recreational camping vehicles, but that rule does not decide whether one RV may be used as a residence on private land14.
We also could not confirm a county rule written specifically for tiny-home occupancy or a general minimum dwelling size. A tiny home still has to fit the parcel's zoning district, sanitation requirements and any applicable building-code process5310. A new manufactured home is a different regulated category: Minnesota requires an installation inspection before occupancy, and Houston County has district-specific manufactured-home rules157.
Building a home in Houston County: what are the steps?
- Ask Houston County Planning & Zoning to identify the parcel's jurisdiction, zoning district, and any floodplain or shoreland controls29.
- If the site is in a county floodplain district, obtain the Zoning Administrator's permit before building, altering a structure, placing fill or doing other listed development18.
- Confirm who administers the SSTS program, then complete the site evaluation, design and permit process before locking in the house location413.
- Ask which certified building official has jurisdiction and whether a State Building Code permit is administered for the project11.
- Obtain a permit from the responsible road authority before adding access to a public highway16.
- Keep permitted work accessible for the inspections identified by the building official until final approval17.
What should you check before buying land in Houston County?
Start with jurisdiction and the parcel map: township zoning, city rules, floodplain and shoreland status can send the same building idea through different review paths28. Ask Planning & Zoning for the district and permitted-use answer before making the purchase unconditional9. Then investigate septic feasibility, because only 8.5% of mapped county soils are rated without severe limits for a conventional drain field13.
Houston County's terrain also affects siting and cost: 52.6% of the land is at a slope of 15% or less, while 41.7% is wooded1819. Verify legal and physical road access, since a new connection to a public highway is subject to a permit from the road authority16. We could not confirm the private-well permit process, so ask Planning & Zoning which office should review the water source9. The median property-tax bill is about $2,633 per year and the effective rate is about 1.2%2021.
Watch-outs
- Houston County's confirmed building-permit rule is specific to listed development in floodplain districts; ask Planning & Zoning rather than assuming the same county permit applies everywhere19.
- Only 8.5% of mapped Houston County soils are rated without severe limitations for a conventional septic drain field, so investigate septic feasibility before choosing the house site13.
- Long-term RV occupancy, tiny-home occupancy, a general minimum dwelling size and the private-well permit path remain unconfirmed; ask Planning & Zoning for parcel-specific direction29.
Sources
- Houston County Zoning Ordinance, quoted and re-checked
- Houston County Zoning / Planning Department (2026 county census)
- Local septic system programs (2026 county census)
- Local septic system programs, quoted and re-checked
- Houston County Zoning Ordinance, quoted and re-checked
- Sec. 326B.805 MN Statutes (2026 county census)
- Houston County Zoning Ordinance, quoted and re-checked
- Houston County Zoning Ordinance, quoted and re-checked
- Houston County Planning & Zoning (co.houston.mn.us)
- 2025 Minnesota Statutes, section 326B.121 (Minnesota statewide rule), quoted and re-checked
- Minnesota State Building Code Adoption Guide (Minnesota statewide rule), quoted and re-checked
- SSTS design (Minnesota statewide rule), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- 2025 Minnesota Statutes, Chapter 327 (Minnesota statewide rule), quoted and re-checked
- Manufactured home information (Minnesota statewide rule), quoted and re-checked
- Minnesota Statutes, section 160.18: Access to roads; approaches (Minnesota statewide rule), quoted and re-checked
- 1300.0210 INSPECTIONS (Minnesota statewide rule), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
Written September 28, 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.