Bolthole Index

Cass County, North Dakota

Zoning, building permits and septic rules in Grandin, North Dakota

Grandin is a city in Cass County, North Dakota. Septic permits inside Grandin come from the county and state together. 3 rules below are quoted from official sources and independently re-checked, most recently on November 6, 2026. Rules for unincorporated land are on the Cass County page.

Answers from the rulebook for Grandin

Rules another office applies inside Grandin

Grandin does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Who permits septicMixed (with conditions)

    Onsite wastewater-system installation inside Grandin city limits, subject to the relevant local public health unit's permit authority.

    • NDDEQ oversees installer licensing.
    • The installer must secure the permit from the local public health unit before beginning work.
    • Installers must follow local codes.
    “The North Dakota Department of Environmental Quality oversees the licensing of onsite wastewater treatment system installers under the authority of NDCC 23.1-07.1 . All installers must obtain a license from the department, which is issued at no cost, and secure a permit from their local public health unit before beginning work on a system.”
  • Septic permitRequired

    Onsite wastewater-system installation inside Grandin city limits.

    • The permit is from the relevant local public health unit.
    • The installer must obtain a state license and secure the local permit before beginning work.
    • Installers must follow local codes.
    “All installers must obtain a license from the department, which is issued at no cost, and secure a permit from their local public health unit before beginning work on a system.”
  • Well permitLimited

    Private water wells inside Grandin city limits.

    • A water-appropriation permit is needed if the well will draw over 12.5 acre-feet (4,073,000 gallons) per year.
    • The guide states that no permit is needed for wells drawing less than 12.5 acre-feet per year.

    annual withdrawal threshold: > 12.5 acre-feet per year (A Department of Water Resources permit is needed above this threshold.)

    “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 (swc.nd.gov | 701-328-2750). A permit is not needed for wells that draw less than 12.5 acre-feet per year.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Grandin or Cass County directly.

  • Owner-builder exemption — Owner-built residential construction inside Grandin city limits.
  • Building code adopted — Building construction inside Grandin city limits.
  • Minimum dwelling size — Residential dwellings inside Grandin city limits.
  • Living in an RV — Long-term RV occupancy on private land inside Grandin city limits.
  • Camping on your land — Temporary camping on private land inside Grandin city limits.
8 more unanswered
  • Tiny homes
  • Accessory dwellings
  • Septic inspection
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals

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.

Unanswered questions are usually a sign that Grandin publishes no rule on the point, not that none exists. Cass County’s page lists the county offices to call.

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