Unincorporated Nobles County, Minnesota requires a county land-use permit for construction, but we could not confirm a general county building-code permit or inspection program1. County zoning applies by district in unincorporated areas, and Nobles County Environmental Services administers septic permits23. Minnesota's owner-builder exemption is from contractor licensing, not from land-use, septic or other required approvals4.
At a glance
- Construction approval
- A county land-use permit is required; general county building-code permitting is unconfirmed1
- Zoning
- Yes, by district in unincorporated Nobles County2
- Septic permit
- Required through Nobles County Environmental Services35
- RV living
- A general rule for one RV on private land was not confirmed; ask Environmental Services6
- Manufactured home
- At least 24 feet wide and 800 square feet under the county rule7
- Owner-builder
- Contractor-license exemption may apply, but permits are not waived4
- Septic soils
- Only about 2.9% of soils lack severe limits for a conventional drain field8
- Property tax
- About 0.9% effective rate and a $1,674 median annual bill910
Who to call
Zoning
Nobles County Environmental Services
County Environmental Services contact for land-use zoning and septic questions in Nobles County
960 Diagonal Rd, PO Box 187, Worthington, MN 56143
Contact details are copied from each office’s official page and were checked against it on September 27, 2026.
Do you need a building permit in Nobles County, Minnesota?
Unincorporated Nobles County requires a land-use permit for construction, but the available county materials do not establish a general county building-code permit or inspection program1. Minnesota's State Building Code is the statewide construction standard, while local enforcement depends on the authority administering the code for the property11. Call Nobles County Environmental Services before design or site work to confirm which land-use approval applies and whether another building official has jurisdiction121. If a State Building Code permit is required, the permitted work is subject to inspection and must remain exposed until the building official approves it13. An owner who personally builds or improves residential property may qualify for Minnesota's contractor-license exemption, but that exemption does not waive applicable permits or inspections4.
Who handles permits in Nobles County, and how do you reach them?
Nobles County Environmental Services is the first office to call for county land-use zoning and septic questions13. The office is at 960 Diagonal Road, PO Box 187, Worthington, Minnesota 56143, and its phone number is 507-295-532212. The official state directory also lists [email protected] as a Nobles County contact email12. Ask the office to identify the zoning district, required land-use application, septic sequence, floodplain status and the building-code authority for the exact parcel145151. General building inspections and certificates of occupancy for unincorporated Nobles County were not confirmed, so include both questions in the first call1.
Does Nobles County have zoning?
Yes. Nobles County's zoning ordinance regulates land by district in the county's unincorporated areas, while incorporated municipalities may have separate authority2. The parcel's district matters because the reviewed residential standards set different lot, setback, coverage and height rules16171819. For a dwelling with a private sewer system in the cited residential district, the minimum lot size is generally one acre, with a conditional reduction tied to soil percolation and room for two septic treatment areas16. The cited residential setbacks are 100 feet from a state highway centerline, 100 feet from a county-road centerline and 65 feet from a township-road centerline, with district-specific exceptions17. Confirm the parcel's actual district with Environmental Services before applying those figures1220.
How do septic permits work in Nobles County?
Nobles County Environmental Services administers the county's subsurface sewage treatment system program3. A county SSTS construction permit is required before constructing, installing, modifying, replacing, repairing, operating or expanding the capacity of a septic system, and the permit is valid for one year5. Where an SSTS permit is required, Nobles County requires that permit before issuing a building or land-use permit5. Compliance inspections apply to new and replacement systems and other situations identified in the ordinance, and qualified licensed businesses or certified employees must perform and sign them21. Site feasibility deserves early attention because only about 2.9% of county soils are rated without severe limitations for a conventional septic drain field8. Contact Environmental Services before fixing the house location because the septic design, replacement area and zoning layout need to work together1216.
Can you live in an RV or tiny home on your land in Nobles County?
We could not confirm a Nobles County rule that generally allows or prohibits living in one RV on private land, so ask Environmental Services about the proposed duration, utilities and zoning district before relying on an RV during construction12. Minnesota's recreational-camping-area law covers an area accommodating five or more tents or recreational vehicles and does not resolve one RV on a private parcel6. We also could not confirm a county rule addressing tiny homes by that name or a general minimum size for every dwelling2. A manufactured home follows a specific county rule: it must be at least 24 feet wide, contain at least 800 square feet of interior floor area, sit on an approved permanent foundation and meet the other ordinance requirements7. New manufactured homes installed for occupancy also require inspection under the federal installation standards22.
Building a home in Nobles County: the steps, in order
- Ask Environmental Services to confirm that the parcel is under county zoning, identify its district and explain the applicable land-use permit1221.
- Complete the septic site evaluation, design and county SSTS permit before seeking the land-use permit when a new system is required5.
- Ask which building official, if any, administers State Building Code permits and inspections for the parcel because general county enforcement was not confirmed111.
- Obtain a permit from the responsible road authority for new or additional access to a public highway23.
- If building as the owner, document eligibility for the contractor-license exemption without treating it as an exemption from permits4.
What should you check before buying land in Nobles County?
Make septic feasibility the first physical due-diligence item because only about 2.9% of Nobles County soils lack severe limitations for a conventional drain field8. The terrain is broadly gentle, with about 99.7% of land at a slope of 15% or less, but that does not remove the need for parcel-specific soil and drainage review24. Confirm the zoning district, minimum lot size, road setback and floodplain overlay with Environmental Services rather than applying one residential standard countywide12161715. Verify legal access because an added entrance onto a public highway requires the road authority's permit23. For carrying costs, the countywide effective property-tax rate is about 0.9%, the median annual property-tax bill is about $1,674 and the typical annual home-insurance premium is about $1,84091025.
Watch-outs
- A Nobles County land-use permit is required for construction, but we could not confirm a general county building-code permit, inspection or certificate-of-occupancy program; ask Environmental Services who has code jurisdiction over the parcel112.
- The cited one-acre private-sewer lot minimum and road setbacks come from residential district standards, so confirm the parcel's zoning district before using them in a design1617.
- Only about 2.9% of county soils lack severe limits for a conventional drain field, so a low-cost conventional septic layout should not be assumed before a site evaluation8.
Sources
- Nobles County Environmental Services - Land Use Permit Fees (2026 county census)
- Nobles County Zoning Ordinance, quoted and re-checked
- Subsurface Sewage Treatment System Ordinance, quoted and re-checked
- Sec. 326B.805 MN Statutes (Minnesota statewide rule), quoted and re-checked
- Subsurface Sewage Treatment System Ordinance, quoted and re-checked
- 2025 Minnesota Statutes, Chapter 327 (Minnesota statewide rule), quoted and re-checked
- Nobles County Zoning Ordinance, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- 2025 Minnesota Statutes, section 326B.121 (Minnesota statewide rule), quoted and re-checked
- Nobles County Environmental Services (pca.state.mn.us)
- 1300.0210 INSPECTIONS (Minnesota statewide rule), quoted and re-checked
- Nobles County Zoning Ordinance (2026 county census)
- Nobles County Zoning Ordinance, quoted and re-checked
- Nobles County Zoning Ordinance, quoted and re-checked
- Nobles County Zoning Ordinance, quoted and re-checked
- Nobles County Zoning Ordinance, quoted and re-checked
- Nobles County Zoning Ordinance, quoted and re-checked
- Zoning Ordinance & Maps, quoted and re-checked
- Subsurface Sewage Treatment System Ordinance, 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
- Share of land at 15% slope or less: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
Written September 27, 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.