Zoning, building permits and septic rules in Town of Belt, Montana

Town of Belt’s own rules

• Building in a floodplainRequired

  Any development or activity within a floodplain inside Belt town limits.

  • The requirement applies only within a floodplain.
  • The City of Belt publishes a 2024 floodplain ordinance, permit checklist, and permitting flowchart.

  “Permits - A floodplain permit is required for any development or activity within a floodplain.”

• Permit processPartial

  Floodplain permits for development or activity within a floodplain inside Belt town limits.

  • This is a published process for floodplain permits only, not a general building-permit process.

  “FlowChart of Flood Permitting Process View & download PDF.”

Rules another office applies inside Town of Belt

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

• Well permitLimited

  New or expanded groundwater uses statewide, including inside Belt town limits.

  • A beneficial-water-use permit is required unless a permitting exception applies.
  • A groundwater development of 35 gallons per minute or less and not over 10 acre-feet per year is exempt from applying for a permit.
  • Beginning January 1, 2026, an appropriator using that exception must submit a Notice of Intent to Appropriate Groundwater before putting water to use.

  groundwater permit-exception maximum flow: <= 35 gallons per minute (Use must also not exceed 10 acre-feet per year.) · groundwater permit-exception maximum annual volume: <= 10 acre-feet per year (Use must also be 35 gallons per minute or less.)

  “A person is not required to apply for a permit to develop a groundwater well, spring, pit, or pond with a use of 35 gallons per minute or less, not to exceed 10 acre-feet per year (Section 85-2-306, MCA).”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Belt or Cascade County directly.

• Building permit — Residential construction inside Belt town limits, excluding the separately documented floodplain-permit requirement.
• Owner-builder exemption — Owner-built residences inside Belt town limits.
• Building code adopted — Buildings inside Belt town limits, Montana.
• Inspections — Residential construction inside Belt town limits.
• Certificate of occupancy — New or altered residential buildings inside Belt town limits.

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.