Zoning, building permits and septic rules in St. Martins, Missouri

St. Martins’s own rules

• Building permitRequired

  Any construction within St. Martins city limits; the city directs applicants to Cole County for issuance.

  • Permit issuance is through Cole County.
  • The city page says permits can be obtained from the County office on Monticello Road or online.

  “Building Permits - A building permit is required for any construction within the City. Building Permits are issued through Cole County and can be obtained from their office on Monticello Rd or online.”

• Driveway accessRequired

  Newly constructed or paved driveways inside St. Martins city limits.

  “DRIVEWAY EXCAVATION PERMIT: A driveway permit is required for newly-constructed or paved driveways”

• Permit processPartial

  Building permits for construction inside St. Martins city limits.

  • Building permits are issued through Cole County.
  • The city says they can be obtained at the County office on Monticello Road or online.

  “Building Permits - A building permit is required for any construction within the City. Building Permits are issued through Cole County and can be obtained from their office on Monticello Rd or online.”

Rules another office applies inside St. Martins

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

• Owner-builder exemptionConditional

  A homeowner proposing to install an onsite wastewater treatment system inside St. Martins city limits, subject to the applicable local permitting authority.

  • Homeowners may install their own system only in some instances.
  • The homeowner must check with the local permitting authority.
  • A construction permit may be required.

  “In some instances, homeowners may install their own system. However, you must check with the local permitting authority. Additionally, a construction permit may be required.”

• Septic permitRequired

  Installation or repair of most onsite wastewater treatment systems inside St. Martins city limits.

  • Some single-family residential lots may be exempt from permitting.
  • A residential property under three acres requires a permit to install or repair an onsite system, except where the stated exemption does not apply in some counties.
  • Nonresidential onsite systems require a permit regardless of property size.
  • Work must not begin until a permit is issued or the appropriate authority confirms an exemption.

  residential-property-size: < 3 acres (A construction permit is required to install or repair an onsite system; exemption does not apply in some counties.)

  “A construction permit is required to install or repair an onsite system on any residential property less than three acres. (This exemption does not apply in some counties; check with the county authority.) Regardless of the size of the property, a permit is necessary for all other onsite systems that serve non-residential structures.”

• Septic inspectionNot required

  A real-estate transaction involving an onsite wastewater treatment system inside St. Martins city limits, under state law only.

  • A lender or buyer may request an inspection or evaluation, in which case it must be conducted by a licensed individual.
  • A county may impose an inspection or evaluation requirement for every real-estate transaction; the local permitting authority must be checked.

  “No. However, if a lender or buyer requests an inspection/evaluation, it must be conducted by a licensed individual. Some counties may require an onsite system inspection/evaluation for every real estate transaction. Check with the local permitting authority.”

• Off-grid sanitationLimited

  Onsite disposal of domestic sewage inside St. Martins city limits where an onsite system is authorized.

  • The system cannot pose a threat to public health or the environment.
  • The applicable permit and permitting-authority requirements still apply.

  “No. Your system cannot pose a threat to public health or to the environment.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask St. Martins or Cole County directly.

• Building code adopted — Building work inside St. Martins city limits.
• Inspections — Construction inside St. Martins city limits.
• Certificate of occupancy — Occupancy of buildings inside St. Martins city limits.
• Local zoning — Land inside St. Martins city limits.
• Zoning districts — Zoning districts inside St. Martins city 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.