Bolthole Index

Cass County, North Dakota

Building permits, zoning and land rules in Cass County, North Dakota

60Index Score / 100
#2 of 53 in North Dakota

Building permits in Cass County, North Dakota depend on the project and the township, city or other local jurisdiction: structural remodeling or expansion normally requires one, and substantial electrical, plumbing and mechanical work requires permits even without structural changes1. Contact the appropriate local jurisdiction before building because zoning also varies across Cass County2. Fargo Cass Public Health licenses and inspects septic systems and issues a use permit after approval3.

At a glance

Building permit
Depends on the project and local jurisdiction; structural changes normally require one1
Zoning
Varies by township or municipality; confirm the parcel's jurisdiction2
Septic permit
Licensed and inspected by Fargo Cass Public Health; use permit follows approval34
Major subdivision
Splitting into more than 4 buildable lots needs Planning Commission + County Commission approval5
Minor subdivision
Up to 4 buildable lots; needs a Planning Commission hearing5
Owner-builder exemption
Not confirmed by county sources6
Well permit
Required only above 12.5 acre-feet/year withdrawal7
Manufactured home
Needs a licensed installer and inspection before occupancy8

Who to call

Planning & zoning

Cass County Planning Office

Township zoning coordination, subdivision (plat) administration, floodplain administration, and building-permit application forms for unincorporated Cass County

(701) 298-2375

1201 Main Ave. W., West Fargo, ND 58078

Septic permits

Fargo Cass Public Health

Licensing and inspection of on-site sewage treatment systems (septic) for Cass County and neighboring counties

701.241.1360

1240 25th Street South, Fargo, ND 58103

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Cass County, North Dakota?

The answer depends on the work and the township, city or other local jurisdiction. Structural remodeling or expansion in Cass County normally requires a building permit, and substantial electrical, plumbing and mechanical work requires permits even when no structural change is planned1. Smaller jobs such as roofing, siding, window replacement and some garden sheds may also require permits under local rules1. Contact the appropriate township, city or Cass County planner before starting development9. North Dakota's state building code took effect January 1, 2026, but state Community Services does not enforce it; enforcement belongs to jurisdictions that elect to adopt and enforce a code1011. Permit and plan-review fees are set by the applicable governing authority12.

Who is the Cass County building department, and how do you reach them?

Start with the Cass County Planning Office, which coordinates township zoning and reviews proposals against county subdivision, floodplain and highway-access rules5. The Planning Office is at 1201 Main Ave. W., West Fargo, ND 58078, and its phone number is (701) 298-23755. Office hours are Monday through Friday, 8 am to 5 pm5. The Planning Office can identify whether the township, city or county planner is the right first contact, because applicants must check with the applicable jurisdiction before development9. We could not confirm a single countywide building-inspection program or certificate-of-occupancy rule; ask the identified local permitting authority what inspections and closeout documents apply.

Does Cass County have zoning?

Zoning varies across Cass County townships and municipalities rather than coming from one confirmed countywide ordinance2. The Cass County Planning Office evaluates proposals against township zoning ordinances and directs applicants to the appropriate township or city before building25. North Dakota law allows a county commission to regulate land and buildings within the county, subject to the state building-code chapter and a comprehensive plan13. For a specific parcel, ask the Planning Office which jurisdiction controls and then obtain that jurisdiction's answer on setbacks, minimum lot size, building height, RV occupancy and tiny homes; countywide measurements or occupancy rules for those topics could not be confirmed.

How do septic permits work in Cass County?

Fargo Cass Public Health licenses and inspects the septic system for any Cass County home or small commercial building that discharges household wastewater, then issues the use permit after a successful inspection3. Give Fargo Cass Public Health 24-hour notice before requesting the inspection; inspectors examine the tank and drain field in an open trench, and the system must remain uncovered until approval4. Reach the office at 1240 25th Street South, Fargo, ND 58103, or 701.241.136014. The installer also needs a North Dakota Department of Environmental Quality license and the local public-health permit before beginning work15. Only about 16% of Cass County soils rate free of severe limits for a conventional drain field, so confirm the site and design before assuming a standard system will work16.

Can you live in an RV or tiny home on your land in Cass County?

We could not confirm a countywide rule for RV or tiny-home occupancy on private land in Cass County. Zoning varies by township and municipality, so ask the Cass County Planning Office to identify the jurisdiction for the parcel and then ask that jurisdiction what its ordinance allows25. North Dakota's limit of 14 nights in any 30-day period applies to state-park campsites and cabins, not private-land occupancy17. A new manufactured home used as a residence must be installed by a state-licensed installer and inspected by a state-licensed inspector8. Do not treat that manufactured-home rule as an answer for a site-built tiny home; the applicable local jurisdiction still needs to confirm zoning, size and occupancy requirements.

Building a home in Cass County: the steps, in order

  1. Call the Cass County Planning Office at (701) 298-2375 to identify the township, city or county authority for zoning and permits before development begins59.
  2. If you are splitting rural property, check with the Planning Office first because the county subdivision ordinance may apply5.
  3. Confirm whether the building scope needs local building, electrical, plumbing or mechanical permits; structural remodeling or expansion normally requires a building permit1.
  4. Obtain the local public-health septic permit before work starts, then give Fargo Cass Public Health 24-hour notice for the open-trench inspection and leave the system uncovered until approval154.
  5. Obtain a Cass County Highway Department permit for new or modified access to a county highway; use the Fargo NDDOT District Office for a state highway or the township or city for its roads18.
  6. If the site is in a special flood hazard area under Cass County jurisdiction, obtain the floodplain development permit before construction or development begins19.
  7. If a well will withdraw more than 12.5 acre-feet per year, obtain a state water-appropriation permit; smaller qualifying domestic wells must still be reported7.

What to check before you buy land in Cass County

Zoning: ask the Cass County Planning Office which township, city or county authority controls the parcel because local zoning varies across Cass County25. Soils: only about 16% of Cass County soils rate free of severe limits for a conventional septic drain field, so investigate the site before assuming a standard system will work16. Flood: development in a special flood hazard area under Cass County jurisdiction requires a permit before work begins19. Access: a new or modified entrance to a county highway requires a Cass County Highway Department permit, while state, township and city roads go to their respective authorities18. Taxes: Cass County's typical effective property tax rate is about 1.2%, with a median annual bill near $3,4492021.

Watch-outs

  • Cass County permit and zoning answers depend on the project and the parcel's township, city or other jurisdiction; contact the appropriate local authority before development12.
  • Give Fargo Cass Public Health 24-hour notice for the open-trench septic inspection, and do not cover the tank or drain field before approval4.
  • Cass County's own sources don't confirm an owner-builder exemption; check directly with the Planning Office before assuming you can act as your own contractor6.

Sources

  1. Cass County Planning Office — Prospective Rural Developers and Homeowners, quoted and re-checked
  2. Cass County Planning Office — Prospective Rural Developers and Homeowners, quoted and re-checked
  3. On-site Sewage Treatment Systems, quoted and re-checked
  4. On-site Sewage Treatment Systems, quoted and re-checked
  5. Cass County Planning Office (casscountynd.gov)
  6. (2026 county census)
  7. Water Appropriation Permits (North Dakota statewide rule), quoted and re-checked
  8. Manufactured Home Installation Program (North Dakota statewide rule), quoted and re-checked
  9. Cass County Planning Office — Prospective Rural Developers and Homeowners, quoted and re-checked
  10. Building Codes | Commerce | North Dakota (North Dakota statewide rule), quoted and re-checked
  11. Building Codes (North Dakota statewide rule), quoted and re-checked
  12. 2026 North Dakota State Building Code Book (North Dakota statewide rule), quoted and re-checked
  13. North Dakota Century Code, Chapter 11-33, County Zoning (North Dakota statewide rule), quoted and re-checked
  14. Fargo Cass Public Health (fargond.gov)
  15. On-Site Wastewater Treatment Systems (North Dakota statewide rule), quoted and re-checked
  16. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  17. Parks and Recreation FAQ (North Dakota statewide rule), quoted and re-checked
  18. Cass County Planning Office — Prospective Rural Developers and Homeowners, quoted and re-checked
  19. Ordinance 2025-01 — Cass County Floodplain Development, quoted and re-checked
  20. Effective property tax rate: Bolthole Index county data
  21. Median property tax bill: Bolthole Index county data

Written September 29, 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.

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County locator

Cass County in North Dakota

60
County map
Cass County highlighted among the North Dakota counties · colored by Index score

How Cass County scores

Seclusion75100% ev.
Self-Sufficiency25100% ev.
Admin Boringness5590% ev.
Durability70100% ev.
Property Autonomy73100% ev.
Carry Cost72100% 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 →

$340kTypical home
1.2%Property tax
$4,110Land / acre
22.8"Annual rain
8.2% of yrsSevere drought
3.9 / yr (+3.4)Mid-century 100°F days
19.5 daysMid-century dry spell
1.56" (+7.5%)Mid-century 1-day rain
1.69×Wildfire change factor
100%Forward climate coverage
$1,995Home insurance / yr
2.7% / yrInsurance growth
0.82%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
809People within 30 min
459,344People within 2 hr
6,454Radius comparison (15 mi)
111.3People / sq mi
1.5%Federal land
99.4%Land at 15% slope or less
16.1%Septic soil without severe limits
176,841 acWorkable land screen
2.6%Wooded land
61.8 tonsBiomass / forest ac
41.8°FAvg temp

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Answers from the rulebook for Cass County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Cass County rules

  • Building permitLimited

    Construction and remodeling in Cass County, subject to the applicable Township, City, or other local jurisdiction.

    • Structural remodeling or expansion will normally require a building permit.
    • Substantial electrical, plumbing, and mechanical work requires permits even without structural changes.
    • Roofing, siding, window replacement, and garden sheds of a certain size may require permits depending on local regulations.
    • Applicants should contact the appropriate Township or City before building.
    “Any project in Cass County that involves structurally changing an existing building through remodeling or expansion will normally require a building permit. Permits are also required for substantial electrical, plumbing, and mechanical work even if the work will not involve any structural changes. Even smaller projects such as roofing, siding, replacing windows, and building garden sheds of a certain size may require permits depending on local regulations.”
  • Local zoningVaries (with conditions)

    Aggregate local zoning across Cass County townships and municipalities.

    • The county planning guide directs applicants to the appropriate Township or City before building.
    • The county planning office evaluates proposals against Township Zoning Ordinances.
    • The North Dakota Department of Environmental Quality page lists multiple Cass County township zoning documents.
    “Before any development occurs, contact the appropriate Township, City, or County Planner to inquire about compliance with zoning and FEMA floodplain regulations.”
  • Who permits septicMixed (with conditions)

    On-site sewage treatment systems in Cass County.

    • Cass County adopted the county on-site septic regulations.
    • Fargo Cass Public Health licenses and inspects septic systems and issues use permits.
    • The health program serves Cass and neighboring counties.
    “On-site sewage disposal systems are regulated by the County Sanitarian and the Environmental Health Division of Fargo, Cass Public Health.”
  • Septic permitRequired

    Any home or small commercial building in Cass County that discharges household wastewater.

    • The septic system must be licensed and inspected by Fargo Cass Public Health.
    • A permit is issued for use after a successful inspection.
    • The program serves Cass, Richland, Ransom, Sargent, Steele, and Traill counties.
    “Any home or small commercial building that discharges household wastewater is required to have their septic system licensed and inspected by Fargo Cass Public Health. After a successful inspection, a permit is then issued for use.”
  • Septic inspectionRequired

    Any home or small commercial building in Cass County that discharges household wastewater.

    • Fargo Cass Public Health requires 24-hour notice before an inspection request.
    • FCPH conducts an open-trench inspection of the tank and drain field.
    • The system must not be covered until FCPH approval is given.
    “Please note: we require a 24-hour notice prior to requesting an inspection. FCPH will then conduct an open trench inspection of the tank and drain field. Do not cover the system until FCPH has given approval.”
  • Driveway accessLimited

    New or modified access to a County Highway in Cass County.

    • A permit is required from the Cass County Highway Department for access to a County Highway.
    • Access along a State Highway is handled by the Fargo NDDOT District Office.
    • Access on township or municipal roads is handled by the Township or City.
    “When creating a new access or modifying an existing access to a County Highway, a permit is required from the Cass County Highway Department. Contact the Fargo NDDOT District Office for new or modified accesses along a State Highway, and the Township or City for township or municipal roads.”
  • Building in a floodplainRequired

    Construction or development within a special flood hazard area in Cass County jurisdiction.

    • A development permit must be obtained before construction or development begins in a special flood hazard area.
    • Applications may require duplicate scaled plans showing the nature, location, dimensions, and elevations; structures; fill; storage materials; drainage facilities; and related locations.
    • Lowest-floor and floodproofing elevations must use the NAVD88 or NGVD29 datum as applicable to the FIRM.
    • Non-residential floodproofing may require certification by a registered professional engineer or architect.
    • The ordinance applies to special flood hazard areas within Cass County jurisdiction.
    • The ordinance was adopted April 20, 2026.

    permit timing: before construction or development begins

    “A development permit shall be obtained before construction or development begins within any special flood hazard area established in Section 3.2.”
  • Permit processPartial

    County and local development-related permit process in Cass County.

    • Applicants must contact the appropriate Township, City, or County Planner before development.
    • Building-permit requirements vary with the work and local regulations.
    • County planning review applies to county subdivision, floodplain, and highway-access functions.
    “Before any development occurs, contact the appropriate Township, City, or County Planner to inquire about compliance with zoning and FEMA floodplain regulations.”
  • County-wide zoningPresent

    Numerous Cass County townships have adopted zoning ordinances (Arthur, Bell, Berlin, Davenport, Rich, Wheatland, etc.) filed with ND DEQ, and the county operates a Planning Office administering zoning and subdivision review.

    ND DEQ - Cass County Township Zoning Ordinances ↗Scouted from the county site, not yet independently re-checked

North Dakota rules that apply here

  • Building code adoptedAdopted (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.

    • Community Services updates and amends the state code but does not enforce it.
    • The 2024 updates to the IBC, IRC, IMC, and IFGC, plus the 2024 IECC and IEBC versions and proposed amendments, were adopted on September 11, 2025.
    • The new North Dakota State Building Code went into effect January 1, 2026.
    • Appendix chapters are not part of the state building code unless specifically adopted.

    code versions adopted: 2024 IBC, IRC, IMC, IFGC, IECC, and IEBC with proposed amendments · effective date: 2026-01-01

    “adopted the 2024 updates to the IBC, IRC, IMC, and IFGC and the proposed amendments.”
  • InspectionsRequired

    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.

    • The manufacturer must contract with a third party for inspection during the manufacturing process in the factory.
    • The third-party inspector must be approved as a certified third-party inspector by the Division of Community Services.
    • The inspection covers applicable building, electrical, fire, and plumbing codes and standards.
    • When a certified third-party inspector monitors compliance during factory manufacturing, no further inspection by state or local building, electrical, fire, or plumbing inspectors may be required for that structure during the manufacturing process in the factory.
    • The statutory provision does not apply to a factory manufacturing fewer than two residential or commercial structures per year; the Commerce program page states that manufacturers producing less than two modular structures per year are exempt but must submit a yearly certification of exemption.

    annual modular structures produced: >= 2 structures/year (Factories producing fewer than two residential or commercial structures per year are exempt from the statutory provision; the Commerce program page requires a yearly certification of exemption.)

    “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”
  • 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.”
  • 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.”
  • Agricultural exemptionAvailable (with conditions)

    Buildings used for agricultural purposes under North Dakota's State Building Code.

    • The statute defines agricultural purposes to 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, the State Building Code chapter; other applicable laws or local authorities may still apply.
    “Any building used for agricultural purposes, unless a place of human habitation or for use by the public, is exempt from this chapter.”
  • 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.”
  • Campground & park staysLimited

    Camping at North Dakota state-park campsites and cabins administered by the North Dakota Parks and Recreation Department.

    • Campsite and cabin occupancy is limited to no more than 14 nights in any 30-day period.
    • All vehicles entering a state park must have a valid daily or annual vehicle entrance permit, including overnight stays and day visits.
    • The cited rule concerns state-park facilities and does not determine camping on private land or land governed by local ordinances.

    maximum campsite or cabin occupancy: <= 14 nights in any 30-day period

    “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.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Owner-builder exemption — Owner-builder exemptions from building permits or inspections in Cass County.
  • Certificate of occupancy — Certificates of occupancy in Cass County.
  • Zoning districts — Published zoning districts applicable across Cass County.
  • Minimum dwelling size — Minimum dwelling size requirements in Cass County.
  • Minimum lot size — Minimum lot-size requirements in Cass County.
9 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Off-grid sanitation
  • Mandatory utility hookup

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 Cass County, North Dakota

Is Cass County a good place to live off-grid or homestead?

Cass County scores 60/100 on the Bolthole Index, a solid county profile. Its strengths: deep seclusion — about 809 people within a 30-minute drive and a stronger property-autonomy legal backdrop. Watch-outs: thin water margin (22.8″/yr rainfall).

Do you need a building permit in Cass County, North Dakota?

Cass County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Fargo Cass Public Health, Environmental Health Division. 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 Cass County, North Dakota?

Land in Cass County runs about $4,110 per acre, based on the latest county data.

What is the water situation in Cass County?

Cass County gets about 22.8" of rain a year, with severe drought in roughly 8.2% of years.

How remote is Cass County?

A representative private-land location has about 809 people within a 30-minute drive and 459,344 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

Going off-grid in Cass County means bringing your own water and power. The kit we’d start with:

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How Cass compares in North Dakota

Compare side-by-side →See all 53 North Dakota counties ranked →