Unincorporated Oliver County, North Dakota requires a building permit before new, remodeled, expanded or altered permitted and conditional uses begin, but normal agricultural uses are exempt1. County zoning and subdivision rules apply outside incorporated cities and municipal zoning areas2. Septic permits come from the local public health unit, Western Plains Public Health, not county Planning & Zoning3.
Do you need a building permit in Oliver County, North Dakota?
Yes, for most proposed development in the county-zoned area.
Yes, for most proposed development in the county-zoned area. Oliver County requires a permit before a new, remodeled, expanded or otherwise altered permitted or conditional use begins1. The application requires a scaled duplicate plat, surveyed lot dimensions and the proposed structure's size, shape and location; an unused permit is canceled if construction does not begin within six months unless an extension is granted1. Normal agricultural uses are exempt from the county building-permit requirement, but sanitation, floodplain, subdivision and other applicable rules can still apply2. North Dakota also has a narrower agricultural exemption from the state building-code chapter for buildings not used for human habitation or by the public7. We could not confirm that Oliver County separately adopted and enforces a technical construction code, so ask Planning & Zoning which inspections and code standards apply4.
Who issues Oliver County building and zoning permits, and how do you reach them?
Oliver County's Planning & Zoning Department handles county building and zoning applications.
Oliver County's Planning & Zoning Department handles county building and zoning applications4. Contact the department at 701-794-8721 or OliverCoPZ@outlook.com, or write to PO Box 188, Center, ND 585304. Building applications may be submitted at least one week before the next Planning & Zoning meeting8. The county says a building without a variance does not require a public hearing, but the Planning & Zoning Board issues it after approval by the Board of County Commissioners4. Conditional-use applications require supporting site, map, soil, utility, parking and adjacent-owner information when applicable, and the applicant must attend the public hearing1. The fee schedule approved in May 2024 lists $25 for a residential building under 500 square feet, $50 for 501 to 1,500 square feet and $100 for 1,501 square feet and up9. The current application may use different size bands, and payment is due with the application, so confirm the amount with Planning & Zoning before filing1,4. Septic permits are a separate application to Western Plains Public Health, not to this office3,10.
Does Oliver County have zoning?
Yes.
Yes. Oliver County zoning applies to unincorporated land under county jurisdiction, but not to incorporated cities or land under municipal zoning jurisdiction2. The City of Center may extend its zoning to specified land within one mile of the city limits, so confirm the actual zoning authority before relying on the county ordinance2. County district boundaries are shown on the official zoning map kept by the County Auditor2. Lot size and setbacks vary by district and use: residential subdivision lots without public sewer must be at least 150 feet wide and 45,000 square feet, while mobile-home park lots use different minimums11. Setbacks also vary, including special standards for mobile-home lots and structures near specified waters11. Ask Planning & Zoning to identify the parcel's district, allowed use, setbacks and lot standards before designing a house4.
How do septic permits work in Oliver County?
Western Plains Public Health serves Oliver County for onsite septic permitting, while the North Dakota Department of Environmental Quality licenses installers.
Western Plains Public Health serves Oliver County for onsite septic permitting, while the North Dakota Department of Environmental Quality licenses installers3,10. Contact Western Plains at 701.667.3370 or eh@westernplainsph.org, 403 Burlington St SE, Mandan, ND 5855410. The installer must secure the local permit before work begins and follow local codes3. Western Plains requires inspection while the system remains open, with a call 24–48 hours before completion to arrange it12. Only about 18% of Oliver County soils are rated without severe limitations for a conventional drain field, so test feasibility before fixing the house site13. A non-farm residence also needs written approval of its proposed sanitary-disposal system, and alternative disposal methods require review when underground dispersal is infeasible2,14.
Can you live in an RV or tiny home on your land in Oliver County?
We could not confirm a county rule that specifically allows full-time RV occupancy, temporary private-land camping or tiny-home occupancy.
We could not confirm a county rule that specifically allows full-time RV occupancy, temporary private-land camping or tiny-home occupancy. Ask Oliver County Planning & Zoning about the parcel and proposed duration before moving in or connecting utilities4. We also could not confirm a general minimum dwelling floor area, but a tiny home is not automatically outside the permit and zoning process because new and altered permitted uses require county approval1. Manufactured homes are permitted in the county's Mobile Home Park District subject to park, lot, foundation, skirting, anchoring, water and sewer standards2. A new manufactured home installed for residential use must also use a state-licensed installer and inspector15. No general owner-builder exemption from county permits was confirmed; North Dakota's separate owner-builder provision concerns a discretionary property-tax exemption, not a permit exemption5.
Building a home in Oliver County: the steps, in order
Ask Oliver County Planning & Zoning to identify the governing jurisdiction, zoning district, allowed residential use, setbacks and minimum lot standards.
- Ask Oliver County Planning & Zoning to identify the governing jurisdiction, zoning district, allowed residential use, setbacks and minimum lot standards2,4.
- If the parcel is being split, complete county subdivision review before development; new building lots must be outside the Agricultural district unless the agricultural-division exception applies2.
- Confirm legal access, including written highway-authority approval where the county's highway-frontage rule applies2.
- Have Western Plains Public Health review the proposed septic system and obtain its permit before onsite wastewater work begins3,10.
- Submit the county application with the scaled plat, survey dimensions and structure details, then pay the confirmed fee1.
- Obtain any floodplain-development permit before work in a special flood-hazard area2.
What should you check before buying land in Oliver County?
Confirm who zones the parcel, then obtain the district map, permitted-use rules, setbacks and buildable-area standards from Oliver County Planning & Zoning.
Confirm who zones the parcel, then obtain the district map, permitted-use rules, setbacks and buildable-area standards from Oliver County Planning & Zoning2,4. Check whether a proposed division requires preliminary and final plats, engineering review, security, county approval and recording; agricultural divisions over 10 acres without a new street can fall outside the county's subdivision definition when made for agricultural purposes2. Review flood maps because development in a special flood-hazard area needs a county permit before construction begins2. Test septic feasibility early because only about 18% of county soils avoid severe conventional-drain-field limitations13. For water, withdrawals above 12.5 acre-feet per year require a state appropriation permit, while qualifying lower-use domestic and livestock wells must be reported6. Finally, verify legal road access and any state-highway driveway approval before closing2,16.
Watch-outs
- Normal agricultural uses are permit-exempt, but sanitation, floodplain, subdivision and other applicable rules may still apply2.
- County zoning does not govern incorporated cities or land within applicable municipal zoning jurisdiction2.
- An occupancy permit is required before electrical power is supplied to a building or structure in the county-zoned area2.
- Septic inspection occurs before the open system is covered, with 24–48 hours of advance notice required12.
- RV occupancy, tiny-home occupancy and a general building-inspection schedule remain unconfirmed; ask Planning & Zoning for a parcel-specific answer4.
Sources
16 official pages, each quoted and re-checked · written October 9, 2026
- Oliver County North Dakota Zoning Ordinances, Revised 2026
- Oliver County, North Dakota Revised Zoning Ordinances
- On-Site Wastewater Treatment Systems
- Oliver County Planning & Zoning Department (olivercountynd.org)
- Property Tax Exemption for Builders of Certain New Single Family Residential Properties (North Dakota statewide rule)
- Water Appropriation Permits (North Dakota statewide rule)
- North Dakota Century Code Chapter 54-21.3, State Building Code (North Dakota statewide rule)
- Building & Zoning Permit Applications
- May 2, 2024 County Commission Minutes
- Western Plains Public Health Onsite Septic System Program (westernplainsph.org)
- Oliver County North Dakota Zoning Ordinances, Revised 2026
- Onsite Sewage Treatment System Permit for Construction/Use
- 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
- North Dakota Administrative Code, Section 33.1-21-01-07: General requirements (North Dakota statewide rule)
- Manufactured Home Installation Program (North Dakota statewide rule)
- North Dakota Century Code Chapter 24-01, State Highway System (North Dakota statewide rule)
Written October 9, 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 Oliver 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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