Bolthole Index

St. Louis County, Missouri

Zoning, building permits and septic rules in Ellisville, Missouri

Ellisville is a city in St. Louis County, Missouri. Ellisville adopts its own zoning, so inside its limits Ellisville’s rules apply, not the county’s. 4 rules below are quoted from official sources and independently re-checked, most recently on October 23, 2026. Rules for unincorporated land are on the St. Louis County page.

Answers from the rulebook for Ellisville

Ellisville’s own rules

  • Local zoningPresent (with conditions)

    Land inside Ellisville city limits: the city adopts its own zoning regulations under Title IV, Chapter 400 of its code (Zoning Regulations, sections 400.010 to 400.720 per the eCode360 table of contents).

    • Zoning applies inside city limits; county zoning does not govern land inside Ellisville city.
    • Specific district limits were not opened within the research budget; see dimensional and district claims (all unknown).
    “an ordinance amending title iv: land use; chapter 400: zoning regulations, sections 400.492 and 400.493”
  • Subdividing landRegulated (with conditions)

    Subdivision of land inside Ellisville city limits

    • Plats are reviewed by city staff and the Planning and Zoning Commission and approved by City Council under Title IV, Chapter 405 (subdivisions, sections 405.010 to 405.670).
    “in accordance with article iii of chapter 405 of the code of the city of ellisville, missouri”
  • Permit feesPublished (with conditions)

    City sewer and excavation permits only (sanitary/storm sewer work and street cuts in Ellisville); not general building permit fees

    • Fees are set by reference to code sections 22-26 (sewer) and 27-146 (excavation); the form's own fee lines are shown.
    • Storm sewer permit fee on the form: $0.70 per foot; street cut deposit: $4.00 per square foot.
    • Building permit fees were not located.

    storm sewer permit fee: 0.7 USD per linear foot (as stated on the city sewer and excavation permit form) · street cut deposit: 4 USD per square foot (as stated on the city sewer and excavation permit form)

    “sewer permit fees: code section 22-26, a & b excavation permit fees: code section 27-146”
  • Permit processPartial

    City sewer and excavation permits in Ellisville (city engineering department)

    • Permit expires 90 days after issuance.
    • Work must comply with city ordinances and be approved by the sewer inspector before and after backfilling.
    • Building permit process not located.

    permit expiration: 90 days

    “this permit expires 90 days after issuance.”

Still unanswered

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

  • Building permit — Building permits for new home construction inside Ellisville city limits
  • Owner-builder exemption — Owner-builder exemption for home construction inside Ellisville city limits
  • Building code adopted — Building code adoption inside Ellisville city limits
  • Inspections — Building inspections inside Ellisville city limits
  • Certificate of occupancy — Certificates of occupancy inside Ellisville city limits
20 more unanswered
  • Minimum dwelling size
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • 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 Ellisville publishes no rule on the point, not that none exists. St. Louis County’s page lists the county offices to call.

Off-grid gear

Going off-grid in Ellisville means bringing your own water and power. The kit we’d start with:

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