Zoning, building permits and septic rules in Town of Grass Range, Montana

Rules another office applies inside Town of Grass Range

Town of Grass Range 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)

  Drainfield installation on property inside Grass Range town limits that has a Montana Certificate of Subdivision Approval (COSA).

  • The local health department issues the drainfield permit after a COSA; the cited source does not identify the particular local health department serving Grass Range.
  • The state DEQ administers COSA sanitation approval.

  “sanitation approval from the Montana Department of Environmental Quality”

• Septic permitRequired

  Drainfield installation on property inside Grass Range town limits that has a Montana Certificate of Subdivision Approval (COSA).

  • A COSA does not replace the local health-department drainfield permit.

  “Do I need a permit to install a drainfield now that I have a COSA? Yes, even thought you have a COSA, a drainfield permit is still required by the local health department.”

• Subdividing landRegulated (with conditions)

  Land divisions inside Grass Range town limits comprising less than 20 acres, and condominiums and recreational camping-vehicle and mobile-home parks regardless of parcel size.

  • DEQ review is limited to sanitation facilities, including water supply, sewage disposal, solid-waste disposal, and storm-drainage systems.
  • The cited state program reviews subdivisions before parcels are created.

  land-division size: < 20 acres (Condominiums and recreational camping vehicle and mobile home parks are reviewed regardless of parcel size.)

  “reviews divisions of land comprising less than 20 acres”

Still unanswered

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

• Building permit — Residential building construction inside Grass Range town limits.
• Owner-builder exemption — Owner-built residences inside Grass Range town limits.
• Building code adopted — Building construction inside Grass Range town limits.
• Inspections — Residential building construction inside Grass Range town limits.
• Certificate of occupancy — Completed residential construction inside Grass Range 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.