Bolthole Index

St. Louis County, Missouri

Zoning, building permits and septic rules in Wildwood, Missouri

Wildwood is a city in St. Louis County, Missouri. Wildwood adopts its own zoning, so inside its limits Wildwood’s rules apply, not the county’s. 7 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 Wildwood

Wildwood’s own rules

  • Building code adoptedAdopted (with conditions)

    New construction and alterations inside Wildwood city limits under the city's adopted building/swimming pool and spa code.

    • The city adopts the St. Louis County building/swimming pool and spa code by reference, not a state-model code edition directly.
    • The city's building code may be enforced under a contractual arrangement between the city and St. Louis County (section 500.020(a)).
    • Editor's note: the 2019 St. Louis County building code was adopted with no city amendments.
    • Residential code (section 500.035) and existing building code (section 500.037) are separate adoptions not verified here.
    “the st. louis county building/swimming pool and spa, building code, chapter 1115, including the swimming pool and spa code, chapter 1118, slcro 27,654 (approved 12/18/19, adopted 04/01/20), as amended, is hereby adopted as the building/swimming pool and spa code, as amended, of the city of wildwood, missouri”
  • Local zoningPresent (with conditions)

    Land inside Wildwood city limits; the city's own Chapter 415 Zoning Regulations govern residence district dimensional standards there.

    • Chapter 415 is the city's adopted zoning code and contains residence, park, non-urban, floodplain and other district regulations.
    • Zoning-only topics that were not separately verified remain unknown.
    “the minimum lot area and yard requirements for land uses and developments in the "r-1a" residence district as well as the maximum density of nursing home self-care units shall be as set out below:”
  • Zoning districtsPublished (with conditions)

    Residence, park, non-urban and other zoning districts of Wildwood city limits

    • Districts are published in Chapter 415; the zoning map was not opened.
    “section 415.060 district regulations. section 415.070 "fp" floodplain district regulations. section 415.080 "ps" park and scenic district regulations. section 415.090 "nu" non-urban residence district regulations.”
  • Minimum lot sizeDistrict specific (with conditions)

    Single-family dwelling in the NU non-urban residence district inside Wildwood city limits (rural-residential/agricultural-type district)

    • Figure is the minimum lot area in the NU non-urban residence district table for a single-family dwelling.
    • Lots in this district are subject to the chapter's other conditions, which were not verified.

    minimum lot area, single-family dwelling, NU: >= 3 acres

    “administrative offices and educational facilities — religious 4 acres child-care center 3 acres church 3 acres dwelling, single-family 3 acres”
    One more reviewed finding on this topic
    • District specific (with conditions) — Single-family dwelling on a lot in the R-1A residence district inside Wildwood city limits (main single-family residential district)
      “use minimum area child-care center 30,000 square feet church 3 acres dwelling, single-family 22,000 square feet”
  • Mandatory utility hookupSewer (with conditions)

    A new home inside Wildwood city limits, with plumbing fixtures or drainage piping, where a public sanitary sewer is available

    • Connection is required only if a public sanitary sewer is available; availability is defined as a sanitary sewer line within 200 feet of any part of the property.
    • Connection must comply with the plumbing code and regulations adopted under it.
    • Water connection requirements were not verified.

    sanitary sewer availability distance: <= 200 feet (measured to any part of the property to be connected)

    “a sanitary sewer shall be deemed available when a sanitary sewer line is within two hundred (200) feet of any part of the property to be connected to the sewer.”
  • Subdividing landRegulated (with conditions)

    Land divisions inside Wildwood city limits

    • Subdivision and development rules are in Chapter 420 of the city code; the approval steps and standards were not opened.
    “chapter 420 subdivision and development regulations (section 420.010 &ndash; section 420.410)”

Still unanswered

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

  • Building permit — New single-family construction inside Wildwood city limits
  • Owner-builder exemption — Owner-builder construction inside Wildwood city limits
  • Inspections — Inspections of new homes inside Wildwood city limits
  • Certificate of occupancy — Occupancy of new homes inside Wildwood city limits
  • Minimum dwelling size — Minimum dwelling floor area for single-family homes inside Wildwood city limits
18 more unanswered
  • 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
  • Agricultural exemption
  • Driveway access
  • 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 Wildwood 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 Wildwood means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

← All of St. Louis County: county rules, score and offices