Building permits, zoning and septic rules in Sioux County, North Dakota
53Index Score / 100 #17 of 53 in North Dakota
Sioux County, North Dakota has no county building-permit office that we could find, and we could not confirm whether the county has adopted zoning123. The statewide building code binds only a county, city or township that elects to enforce a building code4. Septic permits come from Western Plains Public Health, the local public health unit, before any installation begins56.
At a glance
Building permit
No county building-permit office found; ask the Auditor's Office1
County zoning
Not confirmed either way; North Dakota lets counties zone countywide, but no Sioux County ordinance was located23
Septic permit
Required; Western Plains Public Health issues the local permit before work begins56
General county administration and support for the Board of County Commissioners, which holds North Dakota's statutory authority to regulate subdivision and, if the county chooses, zoning; the starting point for building-permit or land-use questions because no dedicated department is listed
Issues the local onsite wastewater (septic) system permit required before installation begins in Sioux County, alongside the installer's separate state DEQ license
Issues the floodplain development permit required before any work in a Special Flood Hazard Area; the role is paired with the Emergency Manager's office
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Do you need a building permit in Sioux County, North Dakota?
We found no county building-permit office for Sioux County, and no county building-permit program, which is consistent with a county that has not set one up1. North Dakota's State Building Code, built on the 2024 IBC, IRC, IMC and IFGC, took effect January 1, 2026, but the state does not enforce it: only a city, township or county that elects to adopt and enforce a building code must use it, and we could not confirm that Sioux County has made that election114. A jurisdiction that does enforce the code may not require fire sprinklers in a single-family dwelling, and agricultural buildings are exempt unless used for human habitation or public use12. A factory-built modular structure is different: a factory producing two or more modular structures a year must contract with a state-approved third-party inspector for inspections during manufacturing13. North Dakota's owner-builder rule is a property-tax exemption that a county or city may choose to allow, not an exemption from building permits or inspections14.
Who handles building, septic and floodplain permits in Sioux County, North Dakota?
Sioux County has no dedicated building or planning department; day-to-day county administration runs through the Auditor's Office, which also supports the Board of County Commissioners15. Septic (onsite wastewater) permits go through Western Plains Public Health, the multi-county health district that serves Sioux County16. Floodplain development permits go through the county's Floodplain Administrator, a role paired with the Emergency Manager's office17. Road and highway matters go through the Sioux County Highway Department18. If a parcel lies inside a city, ask the Auditor's Office whether the city runs its own building permits or zoning; septic permits come from the public health unit either way1516.
Does Sioux County have zoning?
Not confirmed either way. We found no Sioux County planning or zoning office, which points toward no county zoning ordinance, but that is not proof: North Dakota law lets a county's board of commissioners zone the whole county, including unincorporated land, and we could not confirm whether Sioux County has used that authority23. North Dakota also lets county commissioners adopt subdivision regulations requiring plat approval, reasonable fees, and public improvements, but we could not confirm that Sioux County has adopted such a resolution19. Because neither ordinance was confirmed, ask the Auditor's Office about minimum home size, lot size, setbacks, RVs, tiny homes, manufactured homes, and plat approval before relying on a parcel's apparent lack of restrictions15. State law protects farming and normal incidents of farming from restrictions adopted under the county subdivision chapter, but that protection does not establish an exemption from other requirements20.
How do septic permits work in Sioux County?
Septic (onsite wastewater) systems in Sioux County involve both state and local authority: the North Dakota Department of Environmental Quality licenses installers and administers statewide permitting and inspection rules, while Western Plains Public Health requires the local installation permit before work begins216. Western Plains Public Health serves Sioux County as the local public-health authority for this program22. A septic permit is required before any system is constructed, altered, repaired or extended, the fee is set by the permitting authority, and a permit is valid for no more than 12 months23. The permitting authority may deny a septic permit if a public sewer is available within 200 feet of the property line24. Only about 12.5% of Sioux County's soils are rated free of severe limits for a conventional septic drain field, so budget for a site evaluation and possibly an engineered system25.
Can you live in an RV or tiny home on your land in Sioux County?
We could not confirm a Sioux County rule addressing RV, tiny-home, or manufactured-home occupancy on private land2. North Dakota's campground rules do not settle that question: they apply to licensed campgrounds and recreational vehicle parks, including parcels with three or more rental lots, and require those facilities to obtain a state license and document compliance with applicable local zoning2627. A manufactured home is different in one respect regardless of local zoning: any new manufactured home installed in North Dakota for residential use must be set up by a Division of Community Services-licensed installer and pass a state-licensed inspection, with at least two inspections for a double-wide and one for a single-wide28. Ask the Auditor's Office before relying on an RV or tiny home as a Sioux County residence15.
How do you build a home in Sioux County, North Dakota, step by step?
Confirm with the Auditor's Office whether your tract is inside any city limits or a city's extraterritorial zoning jurisdiction, since Sioux County's own zoning status wasn't confirmed either way152.
We found no county building permit requirement in Sioux County, though North Dakota's statewide building code, effective in 2026, sets the standard wherever a local jurisdiction chooses to enforce a code111.
Line up your septic (onsite wastewater) permit: apply to Western Plains Public Health for the local permit, and confirm your installer holds a state DEQ license, before work begins; the permit may be denied if a public sewer is within 200 feet16624.
If your well will draw more than 12.5 acre-feet a year, apply to the North Dakota Department of Water Resources for a water-appropriation permit; typical domestic wells below that threshold don't need one8.
If any part of your build sits in a Special Flood Hazard Area, get a floodplain development permit from the county's Floodplain Administrator before work begins, as the last permit issued for the project; floodway proposals also require notice to and review by the Department of Water Resources unless an exemption applies172930.
If your driveway connects to a state highway, apply for an NDDOT driveway permit, Form SFN 5918, and don't finish the approach until NDDOT checks and approves it10.
Reach the Sioux County Highway Department for anything involving county road maintenance18.
What should you check before buying land in Sioux County?
Soils: only about 12.5% of Sioux County's soils are rated free of severe limits for a conventional septic drain field, so a site evaluation before you buy is worth the cost25. Flooding: development in a Special Flood Hazard Area needs a local permit before work begins29. A project in the regulatory floodway may not increase flood levels during the base flood discharge31. In the flood fringe, a home's lowest floor, including its basement, generally must be at least 1 foot above base flood elevation; a nonresidential building must meet that elevation standard or be floodproofed at least 2 feet above base flood elevation32. Water: a well drawing more than 12.5 acre-feet a year needs a state water-appropriation permit; a typical domestic well does not8. Taxes: the effective property tax rate is about 0.5%, with a median annual bill near $4103334.
Watch-outs
Sioux County's zoning status is unconfirmed, not confirmed absent: North Dakota law lets counties zone countywide, so call the Auditor's Office before assuming anything about RV, tiny-home or setback rules on a parcel315.
North Dakota's owner-builder rule is a property-tax exemption that requires a county or city resolution; it does not waive building permits or inspections where they exist14.
A septic permit lasts no more than 12 months, so time the application close to construction23.
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.
Sioux County highlighted among the North Dakota counties · colored by Index score
How Sioux County scores
Seclusion89100% ev.
Self-Sufficiency19100% ev.
Admin Boringness8090% ev.
Durability43100% ev.
Property Autonomy73100% ev.
Carry Cost8194% ev.
Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →
$87kTypical home
0.5%Property tax
$1,367Land / acre
18.2"Annual rain
10% of yrsSevere drought
7.9 / yr (+6.2)Mid-century 100°F days
22.6 daysMid-century dry spell
1.23" (+4.8%)Mid-century 1-day rain
1.44×Wildfire change factor
100%Forward climate coverage
state median fallbackInsurance basis
631Radius comparison (15 mi)
3.3People / sq mi
5.1%Federal land
84.8%Land at 15% slope or less
12.5%Soils rated "not limited" for septic (strict USDA rating)
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Cities and towns in Sioux County
Inside a city, town or township here, that government usually sets zoning and may issue its own building permits; the county’s rules above cover land outside them.
Fort Yates · Menz Township · Selfridge · Solen
Answers from the rulebook for Sioux County
What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.
Sioux County rules
Who permits septicLocal
Local public-health administration for onsite septic systems serving Sioux County.
Western Plains Public Health lists Sioux County among the counties where it provides services.
The North Dakota Department of Environmental Quality page requires a permit from the local public health unit before system work begins.
“Services Provided In Grant, Mercer, Morton, Oliver and Sioux Counties”
Building in a floodplainRequired
Construction or other work in a Special Flood Hazard Area within Sioux County, North Dakota, administered locally by the Sioux County Floodplain Administrator.
The requirement applies to work in a Special Flood Hazard Area in an NFIP participating community.
The floodplain development permit must be obtained before beginning work and should be the last permit issued for the project.
The North Dakota Department of Water Resources must review development within the regulatory floodway before a floodplain development permit is issued.
Structures in Special Flood Hazard Areas that are substantially damaged or improved by more than 50 percent must fully comply with applicable floodplain regulations.
The official state administrator list identifies Frank Landeis, Emergency Manager/Sheriff, as Sioux County's Floodplain Administrator.
substantial improvement threshold: > 50 percent (Structures substantially damaged or improved by more than 50 percent must fully comply with all applicable floodplain regulations.)
“A floodplain development permit must be obtained from the local Floodplain Administrator before beginning any work in a Special Flood Hazard Area.”
Building permitNot required
North Dakota has no statewide building code and permitting is handled at the county level; the ND Association of Counties official directory lists no building/permit department for Sioux County (a small, largely reservation county), indicating no county building-permit program.
The ND Association of Counties official directory for Sioux County lists no planning/zoning office; consistent with an unzoned rural North Dakota county.
An individual who builds that individual’s own single-family residence and seeks the North Dakota builder property-tax exemption.
The exemption is discretionary and requires the governing city or county to pass a resolution allowing it.
For property within a city, the city governing body has jurisdiction; for property outside an incorporated city, the county has jurisdiction.
The property must remain owned by the builder and unoccupied.
The exemption applies for the taxable year in which construction began and the next two taxable years.
The governing body may impose conditions, including limits on the exemption period and dollar value.
A builder may receive the exemption for no more than ten properties in a taxable year within each jurisdiction that approved the exemption.
General taxes and installments of special assessments may not be delinquent.
This is a property-tax exemption, not a building-permit or building-inspection exemption.
exemption period: taxable year in which construction began and next two taxable years · maximum properties per builder per jurisdiction per taxable year: 10 properties
“Whether or not to offer the exemption is at the discretion of the governing body. [...] “Builder” includes an individual who builds that individual’s own residence.”
Building code adoptedPartial
North Dakota's state building code and its adoption and enforcement by cities, townships, and counties statewide; state and local government buildings and schools are also addressed by the administrative code.
The state building code is administered and updated by North Dakota Commerce, but enforcement is the responsibility of jurisdictions that elect to adopt and enforce building codes.
A city, county, or township that elects to adopt and enforce a building code must adopt and enforce the State Building Code.
Cities, townships, and counties may amend the State Building Code to conform to local needs.
Fully chartered home rule cities may adopt something other than the State Building Code; the official Commerce page states that, at present, all jurisdictions enforcing a building code have adopted the same individual codes comprising the State Building Code.
The State Building Code consists of the International Building Code, International Residential Code, International Mechanical Code, and International Fuel Gas Code; Commerce also states that the 2024 updates and proposed amendments were adopted on September 11, 2025 and that the new State Building Code went into effect January 1, 2026.
The state statute separately exempts buildings that are neither heated nor cooled, certain low-energy-use buildings, qualifying restored or reconstructed historic buildings, and agricultural buildings unless used for human habitation or by the public.
The administrative code states that its chapter applies to cities, townships, and counties that elect to adopt and enforce building codes within their jurisdictional boundaries, and to all state and local government buildings and public and private schools.
new state building code effective date: 2026-01-01 · state code components: IBC, IRC, IMC, and IFGC
“If a city, county, or township elects to adopt and enforce building codes, it must adopt and enforce the State Building Code.”
4 more reviewed findings on this topic
Adopted — The North Dakota State Building Code as a statewide code framework.
“The new North Dakota State Building Code will go into effect Jan. 1, 2026.”
Adopted — North Dakota's state building-code framework and jurisdictions that elect to administer and enforce a building code.
“Effective August 1, 1994, any city, township, or county that has previously elected to adopt and enforce a building code, or any jurisdiction that elects to adopt and enforce a building code, must adopt and enforce the state building code. A city, township, or county may, however, amend the state building code to conform to local needs.”
Adopted (with conditions) — The North Dakota State Building Code, consisting of the IBC, IRC, IMC, and IFGC, with the 2024 updates and stated amendments effective statewide as the state code framework.
“adopted the 2024 updates to the IBC, IRC, IMC, and IFGC and the proposed amendments.”
Adopted — The North Dakota State Building Code, including residential construction covered by the state residential code.
“The new North Dakota State Building Code will go into effect Jan. 1, 2026.”
InspectionsLimited
Industrialized modular residential and commercial buildings intended for siting anywhere in North Dakota, including Sioux County.
The chapter applies to modular residential and commercial structures intended for siting anywhere in North Dakota on or after July 1, 2003.
Certified industrialized modular buildings are not subject to required state or local inspections for any building component in the factory.
The chapter does not govern manufactured homes built under the federal HUD Manufactured Housing Construction and Safety Standards Act.
The chapter does not cover onsite construction, including construction related to installation of industrialized modular buildings.
Land use, zoning, setback, property-line, onsite development, construction, and inspection requirements remain reserved to state or local government except as provided by the rules.
After installation, state or local code-enforcement agencies may conduct nondestructive walkthrough inspections of certified modular buildings or components to identify and report code violations.
If an industrialized modular building or component is not certified under the chapter, state and local code-enforcement agencies may inspect the building and all components under applicable state or local codes and related procedures.
If the Division of Community Services arranges an onsite inspection after a consumer complaint, the manufacturer pays inspection costs; state inspections by the State Plumbing Board, State Electrical Board, or State Fire Marshal are charged according to their respective rates.
The chapter history states effective dates of July 1, 2003, July 16, 2003, and July 1, 2020.
“Industrialized modular buildings certified according to this chapter shall be deemed to comply with all requirements of this chapter and shall not be subject to required state or local inspections for any building component in the factory.”
3 more reviewed findings on this topic
Required — Factory-manufactured modular residential or commercial structures in North Dakota, including Sioux County when placed there.
“The manufacturer of a modular residential or commercial structure that is built in a factory shall contract with a third party for the inspection”
Required — Factory-built modular residential or commercial structures manufactured in North Dakota or intended for placement in North Dakota, where the manufacturer produces two or more modular residential or commercial structures per year.
“shall contract with a third party for the inspection of the structure for compliance with all applicable building, electrical, fire, and plumbing codes and standards”
Limited — Factory-built modular residential or commercial structures manufactured in North Dakota.
“The manufacturer of a modular residential or commercial structure that is built in a factory shall contract with a third party for the inspection [...]”
Minimum dwelling sizeDistrict specific (with conditions)
City zoning regulations governing the size of residential buildings in North Dakota; the actual minimum, if any, is established by the applicable local zoning ordinance.
The authority is permissive and applies to governing bodies of cities that adopt zoning regulations.
The regulation is subject to North Dakota Century Code chapter 54-21.3.
A local board of adjustment may determine and vary application of the regulations under the local regulations.
“For the purpose of promoting health, safety, morals, or the general welfare of the community, the governing body of any city may, subject to the provisions of chapter 54-21.3, regulate and restrict the height, number of stories, and the size of buildings and other structures, the percentage of lot that may be occupied, the size of yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, or other purposes.”
SetbacksDistrict specific (with conditions)
Local city zoning regulations governing yards, courts, and other open spaces in North Dakota.
The actual setback distances are established by the applicable local zoning regulation.
The authority is permissive and applies to city zoning regulations.
A local board of adjustment may vary application of the regulations under the local regulations.
“For the purpose of promoting health, safety, morals, or the general welfare of the community, the governing body of any city may, subject to the provisions of chapter 54-21.3, regulate and restrict the height, number of stories, and the size of buildings and other structures, the percentage of lot that may be occupied, the size of yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, or other purposes.”
Lot coverageDistrict specific (with conditions)
Local city zoning regulations governing the percentage of a lot that may be occupied.
The actual lot-coverage percentage is established by the applicable local zoning regulation.
The authority is permissive and applies to city zoning regulations.
The regulation is subject to chapter 54-21.3.
“the percentage of lot that may be occupied”
Building heightDistrict specific (with conditions)
Local city zoning regulations governing building height and number of stories.
The actual height or story limit is established by the applicable local zoning regulation.
The authority is permissive and applies to city zoning regulations.
A local board of adjustment may vary application of the regulations under the local regulations.
“For the purpose of promoting health, safety, morals, or the general welfare of the community, the governing body of any city may, subject to the provisions of chapter 54-21.3, regulate and restrict the height, number of stories, and the size of buildings and other structures, the percentage of lot that may be occupied, the size of yards, courts, and other open spaces, the density of population, and the location and use of buildings, structures, and land for trade, industry, residence, or other purposes.”
Manufactured homesLimited
New manufactured homes installed in North Dakota for residential purposes.
Installation must be performed by an installer licensed by the Division of Community Services.
The home must be inspected by an inspector licensed by the Division of Community Services.
The installer must first apply for and receive authorization to install the home from a licensed inspector.
A minimum of two inspections are required on a double-wide home and one inspection on a single-wide home.
After installation meets the installation requirements, an insignia is attached to show the home passes inspections.
minimum inspections for double-wide manufactured home: >= 2 inspections · minimum inspections for single-wide manufactured home: 1 inspection
“All new manufactured homes installed in North Dakota for residential purposes must be installed by an installer licensed by the Division of Community Services and inspected by an inspector licensed by the Division of Community Services.”
Septic permitRequired
Construction, alteration, repair, or extension of onsite wastewater treatment systems in Sioux County and statewide North Dakota.
A permit must be obtained from the permitting authority before construction, alteration, repair, or extension; regular system maintenance does not require a permit.
The permit is issued by the permitting authority within the jurisdiction where the work occurs, and the fee is set by that authority.
A permit may not be issued without a valid installer license, except for an individual installing a system on the individual's own premises under the cited homeowner exception.
Any permit is valid for no more than twelve months from issuance.
For systems or facilities with wastewater flows of 2,500 gallons per day or greater, plans and specifications must be prepared by a North Dakota-registered professional engineer and approved by the Department's Division of Municipal Facilities before construction begins.
A system using a Class V underground waste disposal injection well serving twenty or more persons must submit a shallow disposal system form to the Department.
Permit approval, modification, denial, or revocation must be in writing.
permit validity: <= 12 months maximum (from date of issuance) · public sewer distance: <= 200 feet (the permitting authority may deny the septic permit if a public sewer is available within this distance unless written documentation indicates denial of connection) · large-system wastewater flow: >= 2500 gallons per day (professional engineer plans and Division of Municipal Facilities approval required) · Class V system service population: >= 20 persons (shallow disposal system form required)
“A person may not construct, alter, repair, or extend any system without first obtaining a permit from the permitting authority. Regular system maintenance does not require a permit.”
One more reviewed finding on this topic
Required — Installation of an onsite wastewater treatment system anywhere in North Dakota.
“Installers must obtain both a state license and a local public health permit before beginning work.”
Septic inspectionRequired
Installation of an onsite wastewater treatment system anywhere in North Dakota
The inspection is conducted by the permitting authority or its authorized representative.
The inspection must occur within one business day after the request for inspection.
Construction, alteration, repair, or extension requires a permit before work begins; regular system maintenance does not require a permit.
The permitting authority is a local public health unit, other political subdivision, or designee.
inspection deadline: 1 business day (After receiving the request for inspection) · permit validity: <= 12 months (From date of issuance)
“Inspection of the installation of a system must be conducted by the permitting authority or an authorized representative of the permitting authority in accordance with paragraph 3 of subdivision c of subsection 2 of North Dakota Century Code section 23-35-02, which requires the inspection to be conducted within one business day of receiving the request for inspection.”
One more reviewed finding on this topic
Required — Inspection of onsite wastewater treatment system installations in Sioux County and statewide North Dakota.
“Inspection of the installation of a system must be conducted by the permitting authority or an authorized representative of the permitting authority [...] within one business day of receiving the request for inspection.”
Off-grid sanitationLimited
Off-grid or non-public-sewer sanitation using onsite wastewater treatment systems in Sioux County and statewide North Dakota.
Water-carried wastewater from bathrooms, kitchens, laundry fixtures, and other household plumbing must pass through a septic tank or higher level of treatment before discharge into soil.
If underground dispersal for treatment is not feasible, the permitting authority may review alternative methods of collection and disposal; the rule does not automatically authorize every alternative method.
A new onsite wastewater treatment system requires a minimum one-acre lot.
Wastewater may not be disposed of in a manner that may create a nuisance or cause a system to malfunction or fail.
A permit may not be issued for a system exceeding the property's capacity to properly absorb effluent, although the permitting authority may review alternative disposal methods for a property lacking that capacity.
A system may not be installed in a floodway.
A septic tank abandonment requires notice to the permitting authority, pumping by a septic system servicer, and removal, crushing and backfilling, or inert flowable fill and capping.
minimum lot size for new system: >= 1 acre · public sewer distance affecting permit: <= 200 feet (see NDAC 33.1-21-01-06(5))
“Water carried from bathrooms, kitchens, laundry fixtures, and other household plumbing must pass through a septic tank or higher level of treatment prior to its discharge into the soil. If underground dispersal for treatment is not feasible, the permitting authority may review alternative methods of collection and disposal.”
One more reviewed finding on this topic
Limited — Off-grid or alternative domestic sewage collection, treatment, and disposal systems in North Dakota
“Water carried from bathrooms, kitchens, laundry fixtures, and other household plumbing must pass through a septic tank or higher level of treatment prior to its discharge into the soil. If underground dispersal for treatment is not feasible, the permitting authority may review alternative methods of collection and disposal.”
Well permitLimited
Private water-supply wells statewide in North Dakota.
A water appropriation permit from the North Dakota Department of Water Resources is required when annual withdrawal exceeds 12.5 acre-feet.
A permit is not needed for wells drawing less than 12.5 acre-feet per year, according to the official private-well guide.
For domestic, livestock, fish and wildlife, and recreational uses below 12.5 acre-feet per year, the location and capacity of constructed works must be reported to the Department of Water Resources.
Anyone hired to construct, install, or repair a well, pump, or pitless unit must be licensed; individuals may install or repair wells on their own property without a license.
annual water withdrawal threshold: > 12.5 acre-feet per year (Domestic, livestock, fish and wildlife, and recreational uses below this threshold do not require a water appropriation permit but must be reported.) · annual water withdrawal threshold: > 4073137 gallons per year (Equivalent threshold stated by the Department of Water Resources.)
“Domestic, municipal, public, livestock, fish and wildlife, and recreational water use exceeding 12.5 acre-feet (4,073,137 gallons or 96,979 barrels) per year.”
One more reviewed finding on this topic
Limited — Private water-supply wells in Sioux County and statewide North Dakota.
“If your well will draw over 12.5 acre-feet (4,073,000 gallons) of water per year, it needs to be permitted by the North Dakota Department of Water Resources (dwr.nd.gov | 701-328-2750). A permit is not needed for wells that draw less than 12.5 acre-feet per year.”
Mandatory utility hookupConditional
Use of an onsite wastewater treatment system where a public sewer may be available near the property in Sioux County and statewide North Dakota.
The permitting authority may deny a septic-system construction permit if a public sewer system is available within 200 feet of the property line.
The denial condition does not apply when written documentation indicates denial of connection from the sewer authority.
This is a permit-denial authority, not an affirmative requirement that every property connect to sewer.
public sewer availability distance: <= 200 feet from property line (unless written documentation indicates denial of connection from the sewer authority)
“The permitting authority may deny a permit for the construction of a system if a public sewer system is available within two hundred feet [60.96 meters] of the property line unless written documentation indicates denial of connection from the sewer authority.”
Agricultural exemptionAvailable (with conditions)
Buildings used for agricultural purposes under North Dakota's state building code chapter.
Agricultural purposes include agriculture, farming, ranching, dairying, pasturage, horticulture, floriculture, viticulture, and animal and poultry husbandry.
The exemption does not apply when the building is a place of human habitation or is for use by the public.
The exemption is from Chapter 54-21.3; other applicable state, local, zoning, floodplain, septic, or land-use requirements may still apply.
Buildings subject to the federal Americans with Disabilities Act must conform to the 2010 ADA standards notwithstanding the chapter exemption.
“Any building used for agricultural purposes, unless a place of human habitation or for use by the public, is exempt from this chapter.”
2 more reviewed findings on this topic
Available — Use of land or buildings for farming and normal incidents of farming under any North Dakota county subdivision resolution adopted pursuant to Chapter 11-33.2
“Additionally, no resolution, regulation, or restriction adopted pursuant to the provisions of this chapter shall prohibit or prevent the use of land or buildings for farming or any of the normal incidents of farming.”
Available — Land and buildings used for farming, and the normal incidents of farming, when regulated under a county subdivision resolution adopted under N.D.C.C. chapter 11-33.2.
“Additionally, no resolution, regulation, or restriction adopted pursuant to the provisions of this chapter shall prohibit or prevent the use of land or buildings for farming or any of the normal incidents of farming.”
Subdividing landRegulated (with conditions)
Subdivision of land in North Dakota counties that adopt and enforce subdivision regulations under N.D.C.C. chapter 11-33.2; the statute does not apply to subdivisions within city corporate limits or areas of extraterritorial zoning jurisdiction.
A county board of commissioners is empowered, but not required, to regulate subdivision.
A county subdivision resolution may provide for plat submission and preliminary and final approval.
A county may require public improvements and surety or other security as a condition of final plat approval.
A county may approve plats as a prerequisite to subdivision and may establish and collect reasonable fees credited to the county general fund.
If plat approval is required, final approval or disapproval requires recommendations from both the county planning commission and the township supervisors, although those recommendations are not binding; if township supervisors do not respond within sixty days after notification, the county may take final action.
Subdivision rules may not prohibit or prevent farming or the normal incidents of farming.
The statute separately requires floodplain and water-feature information on plats where applicable.
township recommendation response period: 60 days (If the county does not receive the township supervisors' recommendation by certified mail within sixty days after notification, it may take final action.) · plat approval fee: reasonable fees text (The statute authorizes fees but does not set a statewide amount.)
“For the purpose of promoting health, safety, morals, public convenience, general prosperity, and public welfare, the board of county commissioners of any county is hereby empowered to regulate and restrict within the county the subdivision of land.”
4 more reviewed findings on this topic
Regulated (with conditions) — County subdivision regulation under North Dakota Century Code Chapter 11-33.2, including Sioux County if it adopts a qualifying county resolution
“For the purpose of promoting health, safety, morals, public convenience, general prosperity, and public welfare, the board of county commissioners of any county is hereby empowered to regulate and restrict within the county the subdivision of land.”
Regulated (with conditions) — Subdivision of land in North Dakota, subject to county adoption and administration of subdivision regulations; the statute excludes subdivisions within city corporate limits and areas subject to a city's extraterritorial zoning jurisdiction.
“For the purpose of promoting health, safety, morals, public convenience, general prosperity, and public welfare, the board of county commissioners of any county is hereby empowered to regulate and restrict within the county the subdivision of land.”
Regulated (with conditions) — North Dakota's statewide statutory framework authorizing county regulation of land subdivision; actual regulation depends on county action and does not apply within city corporate limits or applicable extraterritorial zoning areas.
“the board of county commissioners of any county is hereby empowered to regulate and restrict within the county the subdivision of land.”
Regulated (with conditions) — County subdivision regulation authority throughout North Dakota, subject to exclusions for city corporate limits and applicable city extraterritorial zoning jurisdiction.
“the board of county commissioners of any county is hereby empowered to regulate and restrict within the county the subdivision of land.”
Driveway accessLimited
Driveway and other access connections involving the North Dakota State Highway System, including controlled-access facilities and driveways within state highway right-of-way.
The North Dakota statute applies specifically to controlled-access facilities; access is available only at designated points and on terms and conditions specified from time to time.
NDDOT maintains access control on the State Highway System, and proposed changes to access require contact with the District Engineer for coordination.
For a driveway on state highway right-of-way, the NDDOT driveway permit must be granted before the permitted work proceeds; failure to construct the drive approach as permitted may result in cancellation and removal or correction at the landowner's expense.
A driveway is not complete until checked and approved by NDDOT; surfacing may be omitted on field entrances if specified in the application.
The driveway may be used only to provide entrance to and exit from the landowner's property.
A driveway or improvement on the highway right-of-way may not be altered or relocated without permission of the NDDOT District Engineer.
NDDOT supervises the location, construction, and maintenance of driveways and may direct future removal, relocation, or maintenance; NDDOT may diminish or expand use as required for highway-traffic safety.
“No driveway, or improvement constructed on the highway right-of-way shall be altered or relocated without permission of the District Engineer of NDDOT.”
One more reviewed finding on this topic
Required — Driveway approaches connecting property to a state highway right of way in Sioux County, North Dakota.
“DRIVEWAY APPLICATION & PERMIT [...] Driveway Information on State Highway Right of Way [...] The Landowner agrees to install the drive approach in accordance with this permit and attachments hereto and made a part hereof.”
Short-term rentalsLimited
Transient lodging rentals held out to the public for a charge in North Dakota.
A lodging license applies to buildings or structures held out to the public where sleeping accommodations are furnished to transient guests for a charge.
The lodging license does not apply to a single structure with five or fewer guest rooms and ten or fewer total occupants.
The lodging license also does not apply to a series or group of buildings or structures containing five or fewer guest rooms and ten or fewer total occupants.
License applications must be submitted at least 30 days before beginning construction or acquiring new ownership; new construction, renovation, or remodeling also requires the Section 3 Plan Review Checklist; after payment, review may take up to 30 calendar days.
guest-room exemption threshold: <= 5 guest rooms or fewer (Only when total occupants are ten or fewer.) · occupant exemption threshold: <= 10 occupants or fewer (Only when the structure has five or fewer guest rooms.)
“The lodging license does not apply to: Single structures with five or fewer guest rooms and ten or fewer total occupants.”
Permit feesVariable (with conditions)
Building-permit fee schedules under the North Dakota State Building Code framework.
The applicable enforcing jurisdiction determines how it administers and enforces the state building code.
The state publication provides only a sample jurisdiction fee schedule, not a single statewide fee schedule.
Permit and plan-review fees are established by the applicable governing authority; plan-review fees are separate from and in addition to permit fees.
“Where a permit is required, a fee for each permit and plan review shall be paid as required, in accordance with the schedule as established by the applicable governing authority.”
Permit processPartial
Administration and enforcement of the North Dakota State Building Code by eligible city, township, and county jurisdictions.
A city, township, or county that elects to administer and enforce a building code must adopt and enforce the state building code.
Local jurisdictions may amend the state building code to conform to local needs.
A city or township may enforce only within its jurisdictional area; a county may enforce in areas where the state building code is not administered by a city or township.
“Community Services is not involved in the enforcement of the State Building Code. This is the responsibility of jurisdictions that elect to adopt and enforce building codes.”
Campground & park staysLimited
Occupancy of recreational vehicles in North Dakota recreational vehicle parks and campgrounds, including facilities in Sioux County.
The property must qualify as a recreational vehicle park or campground under North Dakota law; a recreational vehicle park is a parcel or tract where three or more lots are offered for rent or lease and is primarily designed to accommodate recreational vehicles.
The operator must obtain a department license before establishing, maintaining, changing use, mixing use, or enlarging the recreational vehicle park or campground.
The license application must include local officials' approval of compliance with applicable local zoning laws, ordinances, or regulations, the proposed water supply, and the proposed sewerage and garbage-disposal method.
A recreational vehicle or other attachment may not be located within ten feet of another tent, recreational vehicle, or part thereof.
A recreational vehicle or tent may not be located so as to create a hazard or restrict emergency vehicles and personnel.
The department must waive the license and inspection requirement for a mobile home park, recreational vehicle park, or campground owned by the state or a political subdivision.
The applicable North Dakota administrative rule was amended effective January 1, 2026.
minimum separation from another tent, recreational vehicle, or part thereof: >= 10 feet · minimum lots for a recreational vehicle park: >= 3 lots
“A person may not establish [...] a recreational vehicle park, or campground in this state without first obtaining a license from the department.”
2 more reviewed findings on this topic
Allowed (with conditions) — Temporary camping by recreational vehicles or tents in North Dakota recreational vehicle parks and campgrounds, including facilities in Sioux County.
“"Campground" means any parcel of land containing three or more lots intended for occupancy by recreational vehicles or tents.”
Limited — Campsite occupancy in North Dakota state parks.
“Campsite and cabin occupancy is limited to no more than 14 nights in any 30-day period.”
county zoning authorityGeneral
North Dakota counties adopting zoning regulations for land and buildings within the county, including unincorporated areas.
The authority is exercised by the board of county commissioners.
Regulation is subject to North Dakota Century Code chapter 54-21.3.
The authority covers the location and use of buildings and structures and the use, condition of use, or occupancy of lands for residence, recreation, and other purposes.
County zoning regulations must be made in accordance with a comprehensive plan.
A county may divide all or any parts of the county into districts, and regulations must be uniform within each district but may differ between districts.
County zoning regulations must account for the statutory limitations governing farming, ranching, and animal feeding operations in section 11-33-02.1.
The board must state the grounds for approving or disapproving zoning amendments or variances, and written findings must be included in the records.
The board must establish zoning requirements for solid waste disposal and incineration facilities before July 1, 1994.
The board may impose tipping or other fees on solid waste management and incineration facilities, but may not impose a fee under this section on an energy conversion facility or coal mining operation that disposes of its waste onsite.
The board may establish institutional controls addressing environmental concerns with the department of environmental quality under section 23.1-10-16.
“For the purpose of promoting health, safety, morals, public convenience, general prosperity, and public welfare, the board of county commissioners of any county may regulate and restrict within the county, subject to chapter 54-21.3, the location and the use of buildings and structures and the use, condition of use, or occupancy of lands for residence, recreation, and other purposes.”
One more reviewed finding on this topic
General — North Dakota county boards of commissioners adopting zoning regulations, including regulation of unincorporated county land.
“the board of county commissioners of any county may regulate and restrict within the county”
county building authorityGeneral
County authority to administer and enforce the state building code, including the residential code, and to provide for building permits for buildings or structures subject to county zoning in unincorporated areas of North Dakota.
A county that elects to administer and enforce a building code must adopt and enforce the state building code; it may amend that code to conform to local needs.
A county may administer and enforce the state building code only in areas where a city or township does not administer it. A city or township may relinquish that authority to its county under N.D.C.C. § 54-40.5-03; local governments may also agree to joint administration and enforcement or contract for private enforcement.
County permit authority under N.D.C.C. § 11-33-18 applies to a building or structure otherwise subject to the County Zoning chapter.
If the county provides for permits, it must require the applicant to state whether the structure is reasonably anticipated to have a significant transportation-system impact. A structure has such impact if it will average at least twenty-five motor vehicles per day during one year with gross weight exceeding sixty thousand pounds [27215.54 kilograms].
For a structure with significant transportation-system impact, the county must notify the director of the department of transportation and allow an opportunity to comment; director approval is not required.
The county may establish and collect reasonable permit fees, which must be credited to the county general fund.
A county-adopted building code may not require fire sprinklers in a single-family dwelling or a residential building containing no more than two dwelling units.
significant transportation-system impact threshold: >= 25 motor vehicles per day (Over a period of one year; vehicles must have gross weight exceeding sixty thousand pounds [27215.54 kilograms].) · fire-sprinkler requirement: false (A county building code may not require sprinklers in a single-family dwelling or residential building with no more than two dwelling units.)
“The governing body of a city, township, or county that elects to administer and enforce a building code shall adopt and enforce the state building code. However, the state building code may be amended by cities, townships, and counties to conform to local needs.”
Set by your township or city, not the county
In North Dakota, zoning is adopted by each township or city, so Sioux County has no county-wide answer on these. Find your township or city in the list of places on this page, or call its clerk or zoning administrator.
Zoning districts
Minimum lot size
Tiny homes
Accessory dwellings
Still unanswered
We looked and could not find an official answer yet. Silence is not permission — ask the county directly.
Certificate of occupancy — Certificates of occupancy for residential or other buildings in Sioux County.
Local zoning — Local zoning within Sioux County, including any municipal, township, or other subordinate jurisdictional areas.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Living off-grid in Sioux County, North Dakota
Is Sioux County a good place to live off-grid or homestead?
Sioux County scores 53/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 631 people within 15 miles and manageable long-term carry cost. Watch-outs: thin water margin (18.2″/yr rainfall).
Do you need a building permit in Sioux County, North Dakota?
Sioux County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Sioux County local public health unit (permit issuance) under ND DEQ Septic Systems Program, NDCC 23.1-07.1. Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.
How much does land cost in Sioux County, North Dakota?
Land in Sioux County runs about $1,367 per acre, based on the latest county data.
What is the water situation in Sioux County?
Sioux County gets about 18.2" of rain a year, with severe drought in roughly 10% of years.
How remote is Sioux County?
A typical private-land location has about 631 people within 15 miles and 190,662 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.
