Bolthole Index

St. Louis County, Missouri

Zoning, building permits and septic rules in Pasadena Hills, Missouri

Pasadena Hills is a city in St. Louis County, Missouri. Pasadena Hills adopts its own zoning, so inside its limits Pasadena Hills’s rules apply, not the county’s. 3 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 Pasadena Hills

Pasadena Hills’s own rules

  • Building code adoptedAdopted (with conditions)

    Building, existing building, residential, mechanical, property maintenance, plumbing and electrical construction inside Pasadena Hills city

    • The adopted codes are the St. Louis County editions 'as amended by the county of saint louis through date of last amendatory ordinances', with copies on file in the city clerk's office.
    • Listed editions: 2009 ICC building code, 2009 ICC existing building code, 2009 ICC residential code, 2009 ICC mechanical code, 2009 ICC property maintenance code, 2009 Uniform Plumbing Code, 2008 National Electrical Code, each adopted by a numbered city ordinance in 2010.
    • Section 500.020 authorizes the city to contract for technical code enforcement services with other governmental entities under terms approved by the board of aldermen.
    • Section 500.040: where city provisions are more restrictive than the county codes, the more restrictive provisions prevail.
    • Section 500.050: the county will not take action to enforce the city's ordinances and will notify the city of known violations.
    • The code page shows no later adoption of a newer code edition; the page was not checked against any later amendment.

    building code edition: 2009 ICC building code (as amended by St. Louis County through the last amendatory ordinance) · electrical code edition: 2008 National Electrical Code

    “are hereby adopted as the: 1. building, 2. existing building, 3. residential, 4. mechanical, 5. property maintenance, 6. plumbing, 7. electrical codes of the city of pasadena hills, saint louis county, missouri, as if fully set out herein.”
  • Local zoningPresent (with conditions)

    Land inside Pasadena Hills city limits. The city's code contains Title IV Land Use, Chapter 405 Zoning Regulations, which sets district regulations, a board of adjustment, certificates of occupancy and enforcement.

    • Only the Chapter 405 table of contents was opened; the text of the district, use and dimensional sections was not reached within the research budget.
    • Chapter 405 sections 405.060 (A Single-Family Residence District), 405.070 (B Two-Family and Multiple-Family Residence District) and 405.080 (C Neighborhood Shopping District) are listed in the table of contents; their text was not verified.
    “chapter 405 zoning regulations article i general provisions section 405.010 definitions.”
  • Zoning districtsPartial

    Zoning districts inside Pasadena Hills city limits

    • Only the Chapter 405 table of contents was opened. The district sections are listed, but their regulations were not read.
    • Article II lists district regulations (A, B and C districts) and special use permits at section 405.085.
    “section 405.060 "a" single-family residence district. section 405.070 "b" two-family and multiple-family residence district.”

Still unanswered

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

  • Building permit — New home construction inside Pasadena Hills city limits
  • Owner-builder exemption — Owner-builder construction of a home inside Pasadena Hills city limits
  • Inspections — Construction inspections for new homes inside Pasadena Hills city limits
  • Certificate of occupancy — Certificate of occupancy for buildings inside Pasadena Hills city limits
  • Minimum dwelling size — Main single-family residential district (Section 405.060 'A' Single-Family Residence District) inside Pasadena Hills city limits
22 more unanswered
  • 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
  • Subdividing land
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees
  • Permit process

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 Pasadena Hills 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 Pasadena Hills means bringing your own water and power. The kit we’d start with:

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