Billings County, North Dakota requires a building permit and Building & Zoning Certificate for new construction and move-in structures1. County zoning governs unincorporated land except where a city exercises extraterritorial zoning2. An approved septic permit and road approach permit must accompany the building application when applicable1.
Do you need a building permit in Billings County, North Dakota?
Yes.
Yes. Billings County requires a building permit for new construction and move-in structures, including modular homes1. A Building & Zoning Certificate is also required before new construction, moving a structure, changing exterior dimensions or use, or subdividing land1. Permitted construction receives field inspections, including a final inspection before the certificate-of-occupancy process3. The completed building may not be occupied until the certificate of occupancy is issued7.
Billings County applies the state building code during plan review7. Agricultural land and buildings have a limited zoning exemption, but county road setbacks and floodplain rules still apply2. A home does not fall within North Dakota's separate agricultural building-code exemption merely because it is on agricultural land8.
Who is the Billings County building department, and how do you reach it?
Start with Billings County Planning & Zoning at the contact above.
Start with Billings County Planning & Zoning at the contact above. The county application goes to the zoning office with the checklist and deposit; after a completeness check, zoning approval comes before Building Department plan review7. For technical building questions and inspections, the county directs applicants to Building Department and Inspections at 701-260-53731.
Plan review is generally about two weeks but is not guaranteed7. Published deposits are $200 for a single-family residence or modular or manufactured home; commercial deposits rise with project size, and the balance is set after review7. A reinspection fee applies when work is not ready7. Ask Planning & Zoning for the current total fee and meeting schedule before committing to a start date1.
Does Billings County have zoning?
Yes.
Yes. Billings County zoning regulates unincorporated territory, while the City of Medora has a one-mile extraterritorial zoning area where municipal rules may apply9. The county ordinance establishes Agricultural, Residential, Recreation, Commercial, Industrial, and Hillside and Ridgeline Overlay districts2. Confirm the parcel's jurisdiction and district before designing the project.
Agricultural and Residential districts generally require five-acre lots, although certain older residential lots and major subdivisions have different standards5. Buildings must generally stand at least 103 feet from a section-line or county-road centerline and 250 feet from a state-highway centerline; district yard rules also apply2. Accessory buildings must be at least 10 feet from lot lines and may be no taller than 15 feet2. Short-term rentals require conditional-use approval from both the Zoning Board and County Commission before nightly, weekly or other short-term rental begins10.
How do septic permits work in Billings County?
Submit the sewage and water facilities application to Southwestern District Health Unit.
Submit the sewage and water facilities application to Southwestern District Health Unit1. An approved septic permit must accompany the Billings County building permit application3. The installed system must be inspected before it is covered and again onsite for final approval11. State rules also require the permitting authority to inspect an onsite wastewater installation within one business day after an inspection request12.
Only about 13.8% of mapped Billings County soils are rated without severe limitations for a conventional drain field, so arrange a site evaluation before fixing the house location13. Household wastewater must receive septic-tank or higher treatment before soil discharge; if underground dispersal is infeasible, the permitting authority may review an alternative, but approval is not automatic12. Ask Environmental Health to approve the proposed system before relying on an off-grid design14.
Can you live in an RV or tiny home in Billings County?
Billings County allows an RV as a temporary residence only under stated conditions: in a licensed RV park, through conditional use in a Residential District, or under the ordinance's temporary-camping provisions.
Billings County allows an RV as a temporary residence only under stated conditions: in a licensed RV park, through conditional use in a Residential District, or under the ordinance's temporary-camping provisions4. A qualifying property with an occupied permanent dwelling may host up to two RVs, with approved septic, potable water, utility service, separation and setback requirements; stays totaling less than 30 days in a 12-month period are exempt from those provisions4. During construction in a Residential District, an RV or mobile home may be conditionally approved as a temporary residence for no longer than one year from building-permit issuance2.
We could not confirm a separate tiny-home occupancy rule. A tiny home built or moved onto land should not be assumed exempt from county building and zoning approval1. Mobile homes on platted Residential District lots require a permanent foundation or properly anchored concrete basement, with wheels and hitches removed2.
Building a home in Billings County: what are the steps?
Ask Billings County Planning & Zoning to confirm whether county zoning or Medora's extraterritorial zoning controls the parcel, then identify the zoning district.
- Ask Billings County Planning & Zoning to confirm whether county zoning or Medora's extraterritorial zoning controls the parcel, then identify the zoning district9.
- Check lot size, road and highway setbacks, floodplain status, and the proposed building location2,5,6.
- Obtain Southwestern District Health Unit approval for the septic system and plan for inspection before covering it3,11.
- Secure the required road approach permit; a state-highway driveway requires NDDOT approval, while the county building application requires its road approach permit3,15.
- Submit the complete building and zoning application, checklist and deposit, then allow time for zoning approval and plan review7.
What should you check before buying land in Billings County?
Confirm zoning jurisdiction, district, buildable area and legal access before closing.
Confirm zoning jurisdiction, district, buildable area and legal access before closing. Medora's extraterritorial area can change the zoning authority, and county road and state-highway approaches have separate approval paths3,9,15. Check setbacks early because county-road and state-highway centerline distances can materially shrink a homesite2.
Map floodplain exposure as well as soils. A county floodplain development permit is required before construction or manufactured-home placement in county floodplain jurisdiction outside Medora and its extraterritorial area6. Conventional septic suitability is severely limited across most mapped soils13. For a private well, North Dakota requires a water-appropriation permit above 12.5 acre-feet per year and reporting for qualifying lower-volume uses16. Billings County's effective property-tax rate is about 0.4%, and its median annual property-tax bill is about $1,18913.
Watch-outs
- Do not occupy a permitted building before Billings County issues its certificate of occupancy7.
- A county floodplain development permit is required before construction or manufactured-home placement in county floodplain jurisdiction6.
- RV residence is conditional or temporary, and construction-site occupancy is limited to one year from building-permit issuance2,4.
- Short-term rental use needs Zoning Board and County Commission approval before renting begins10.
Sources
16 official pages, each quoted and re-checked · written October 7, 2026
- Zoning & Building Applications
- Billings County Zoning Ordinance
- Building Permit Application
- Billings County Zoning Ordinance, amended June 3, 2025
- Billings County Zoning Ordinance
- Floodplain Management Ordinance
- Billings County Building Department Permit Process
- North Dakota Century Code Chapter 54-21.3, State Building Code (North Dakota statewide rule)
- Billings County Zoning Ordinance
- Zoning & Building Applications
- Application for Sewage & Water Facilities
- North Dakota Administrative Code, Chapter 33.1-21-01: Onsite Wastewater Treatment System Installers Licensing Systems (North Dakota statewide rule)
- 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
- Southwestern District Health Unit Environmental Health (swdhu.net)
- North Dakota Century Code Chapter 24-01, State Highway System (North Dakota statewide rule)
- Water Appropriation Permits (North Dakota statewide rule)
Written October 7, 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.
Off-grid gear
Going off-grid in Billings 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.
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