Zoning, building permits and septic rules in Village of Hillsdale, Missouri

Rules another office applies inside Village of Hillsdale

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

• Septic permitRequired

  Installation or repair of an onsite wastewater treatment system inside Hillsdale village limits, where Missouri's onsite-wastewater standards apply.

  • Some single-family residential lots may be exempt from permitting.
  • For residential property under three acres, the stated exemption may not apply in some counties and the county authority should be checked.
  • All onsite systems serving non-residential structures require a permit regardless of property size.
  • The specific local permitting authority for incorporated Hillsdale was not identified.

  residential property size threshold: < 3 acres (Some counties do not apply this exemption.)

  “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

  An onsite wastewater inspection or evaluation before a real-estate transaction inside Hillsdale village limits, under the statewide baseline.

  • A lender or buyer may request an inspection or evaluation, which then must be performed by a licensed individual.
  • A county may impose an inspection or evaluation requirement for every real-estate transaction.
  • No official Hillsdale-specific rule was located.

  “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 wastewater disposal inside Hillsdale village limits under statewide onsite-wastewater standards.

  • The system cannot pose a threat to public health or the environment.
  • Local authority requirements may be more restrictive.

  “Is it legal for wastewater to discharge into a road ditch or onto the ground? 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 Village of Hillsdale or St. Louis County directly.

• Building permit — Residential construction inside Hillsdale village limits.
• Owner-builder exemption — Owner-built residential work inside Hillsdale village limits.
• Building code adopted — Construction inside Hillsdale village limits.
• Inspections — Residential construction inspections inside Hillsdale village limits.
• Local zoning — Land inside Hillsdale village 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.