Bolthole Index

Warren County, Missouri

Building permits, zoning and septic in the Village of Innsbrook, Missouri

The Village of Innsbrook, Missouri administers its own zoning and offers a Zoning Certificate (Building Permit) application; accessory buildings and structures over 120 square feet require building permits.123 Inside this Warren County village, individual sewage disposal and water supply systems require Village approval, while major septic repairs also require a Department of Health and Senior Services permit.452

At a glance

Building permit
Village application available; required for accessory structures over 120 square feet23
Zoning
Village zoning administered by the Planning and Zoning Commission and Board of Trustees1
Septic
Village approval of individual systems; DHSS permit for major repairs42
Manufactured homes
Prohibited in all residential zoning districts6
Minimum home size
AFM single-family dwellings: 1,350 square feet, excluding basement and garage7
Lot size
AFM: at least 3 acres per dwelling unit8
Setbacks
R-L individual lots: 25 feet front, side and rear9
Private water
Individual water supply systems need Village approval5

Who to call

Building permits

Village of Innsbrook Administrator

Building-permit application intake, zoning questions, and coordination of Village sewage and water approvals

636-745-8844

13600 State Highway M Innsbrook, MO 63390

Septic permits

Missouri DHSS Onsite Wastewater Treatment Program

State onsite wastewater permitting questions, including coordination for incorporated areas

573-751-6095

[email protected]

PO Box 570 Jefferson City, MO 65102-0570

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

Going off-grid in Village of Innsbrook 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.

Do you need a building permit in the Village of Innsbrook, MO?

In the Village of Innsbrook, accessory buildings and structures over 120 square feet require building permits.3 The Village publishes a Zoning Certificate (Building Permit) application, with printable applications submitted to the Village with payment.2 Start with the Village Administrator for a proposed house, addition or outbuilding and request the applicable application and approval sequence.2 We could not confirm Innsbrook’s adopted building-code edition, building-inspection procedure, certificate-of-occupancy requirement or owner-builder exemption; ask the Village Administrator to resolve those questions for your project before construction.

Who handles building-permit applications in the Village of Innsbrook?

The Village of Innsbrook accepts printed applications with payment at 13600 State Highway M Innsbrook, MO 63390; the Village Administrator’s information number is 636-745-8844.2 Use the municipal application route for property inside village limits.2 Innsbrook’s Planning and Zoning Commission and Board of Trustees administer Village zoning regulations.1 Ask the Administrator to identify the zoning district, the building-permit documents needed for your work, and any separate review needed for occupancy. For land outside village limits, consult the Warren County guide: the county’s zoning order applies to unincorporated land.10

Does the Village of Innsbrook have zoning, lot-size rules and setbacks?

The Village of Innsbrook has its own zoning regulations, so the district matters when evaluating a building site.1 In the Agricultural Forest Management (AFM) district, the minimum lot size is 3 acres per dwelling unit, with enough land to accommodate individual wells and septic systems.8 AFM single-family dwellings need at least 1,350 square feet of livable floor area, excluding basement and garage space.7

For individual lots in the Residential Low Density (R-L) district, front, side and rear setbacks are each 25 feet.9 R-L buildings are limited to 2 stories and 40 feet in height, measured from grade at the front entrance.11 Ask the Village Administrator to confirm the parcel’s district before using these dimensions in a site plan.2

How do septic permits work inside the Village of Innsbrook?

Dwellings and uses requiring sanitary facilities in the Village of Innsbrook must have municipal service, private community service, or Village-approved individual sewage disposal and water supply systems.5 Individual sewage systems require Village approval and must meet the minimum construction standards referenced in Appendix A.4 The Village’s forms page states that all major sewage-system repairs require a DHSS permit.2

Missouri generally requires a construction permit before installing or repairing most onsite wastewater systems, although some single-family residential lots may be exempt.12 Ask the Village Administrator and DHSS Onsite Wastewater Treatment Program to establish the approval route for the address; do not begin work until the responsible authority has issued a permit or confirmed an exemption.21314

Can you live in an RV or tiny home in the Village of Innsbrook?

We could not confirm whether the Village of Innsbrook allows residential RV occupancy on private land, expressly regulates tiny-home occupancy, or allows accessory dwelling units; ask the Village Administrator about the specific unit and proposed use. Manufactured homes and mobile homes are prohibited in all Innsbrook residential zoning districts.6 In AFM, a single-family dwelling must provide at least 1,350 square feet of livable floor area excluding basement and garage space, so a smaller proposed dwelling would not meet that district’s stated minimum.7

Innsbrook prohibits tents as permanent residences and limits tent use to a temporary period.15 Applications for temporary-use permits go to the Zoning Administrator; the temporary-use process does not establish permission to live permanently in an RV.16

Building a home in the Village of Innsbrook: what steps come first?

Start with the parcel and proposed use, then resolve the approvals before committing to construction.

  1. Ask the Village Administrator to confirm the parcel’s Village zoning district and applicable building-permit application.21
  2. Fit the proposed home to the applicable district dimensions: AFM has dwelling-size and lot-size minimums, while R-L has stated setbacks and height limits.78911
  3. Establish the sewage and water service arrangement, including Village approval for individual systems and the applicable state septic-permit route.514
  4. Ask the Village Clerk whether the site falls within the regulated floodplain areas; Innsbrook requires a separate floodplain development permit for each structure or other development there.17
  5. Submit the Village application with payment and request project-specific instructions about inspections and occupancy.2

Watch-outs

  • Innsbrook’s floodplain development permit applies to proposed construction and other development in the designated floodplain areas; the Village Clerk administers that ordinance.17
  • Village approval of an individual water supply system is required in Innsbrook; we could not confirm a separate Village well-permit requirement, so ask the Village Administrator before drilling.5
  • We could not confirm Innsbrook’s residential RV-occupancy rule, accessory-dwelling rule or driveway-access approval requirement; ask the Village Administrator before buying land for those uses.2

Sources

  1. Planning & Zoning | Village of Innsbrook (Village of Innsbrook), quoted and re-checked
  2. Village of Innsbrook Administrator (villageofinnsbrook.org)
  3. Ordinances & Resolutions | Village of Innsbrook (Village of Innsbrook), quoted and re-checked
  4. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  5. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  6. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  7. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  8. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  9. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  10. The Zoning Order for Warren County, Missouri, quoted and re-checked
  11. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  12. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  13. Missouri DHSS Onsite Wastewater Treatment Program (health.mo.gov)
  14. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  15. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  16. Village of Innsbrook Zoning Regulations, 2017 Update, Ordinance No. 237 (Village of Innsbrook), quoted and re-checked
  17. Village of Innsbrook Floodplain Management Ordinance (Village of Innsbrook), quoted and re-checked

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Village of Innsbrook

Village of Innsbrook’s own rules

  • Building permitRequired

    Accessory buildings and structures over 120 square feet inside Innsbrook village limits.

    • The official ordinance index describes Ordinance No. 71 as applying to accessory buildings and structures over 120 square feet.

    accessory-building area threshold: > 120 square feet

    “71 - Amend the Zoning Order to require building permits for all accessory buildings and structures over 120 square feet. (8/10/2004)”
  • Local zoningPresent (with conditions)

    Land inside Innsbrook village limits.

    • The Village Planning and Zoning Commission and Board of Trustees administer the Village zoning regulations.
    “ZONING CODE Amendments adopted by the Board of Trustees (Ord. No. 237) on 02/13/2017”
  • Camping on your landLimited

    Temporary tent use and camping-like temporary occupancy inside Innsbrook village limits.

    • Tents cannot be used as permanent residences.
    • Tents may only be erected, used, or maintained for a limited period of time.
    • Temporary uses in residential districts must comply with §8.6.
    “Tents shall not be used as a place of permanent residence, and shall not be erected used or maintained on any lot, except for a limited period of time.”
  • Manufactured homesProhibited

    Manufactured homes in all Innsbrook residential zoning districts.

    • The prohibition is stated for all residential zoning districts.
    “The following uses are specifically prohibited in all residential zoning districts: 4.6.1 MANUFACTURED HOMES. 4.6.2 MOBILE HOMES.”
  • Who permits septicLocal (with conditions)

    Individual sewage disposal systems serving dwellings and uses requiring sanitary facilities inside Innsbrook village limits.

    • The system must be approved by the Village of Innsbrook.
    • The zoning code refers to Appendix A for minimum construction standards.
    “individual sewage disposal system and water supply system approved by the Village of Innsbrook. (See Appendix A for minimum construction standards)”
  • Off-grid sanitationLimited

    Private individual sewage disposal systems inside Innsbrook village limits.

    • The private individual sewage disposal and water supply systems must be approved by the Village of Innsbrook.
    • Appendix A supplies minimum construction standards.
    “a private individual sewage disposal system and water supply system approved by the Village of Innsbrook. (See Appendix A for minimum construction standards)”
  • Mandatory utility hookupConditional

    Dwellings and uses requiring sanitary facilities inside Innsbrook village limits.

    • Service may be municipal, private community, or Village-approved individual systems; the opened provision does not impose an availability-distance connection rule.
    “All dwellings and uses requiring sanitary facilities shall be served by either a municipal sewer and water system, a private community sewer and water system, or a private individual sewage disposal system and water supply system approved by the Village of Innsbrook.”
  • Building in a floodplainRequired

    Proposed construction or other development in the Article 2, Section A floodplain areas inside Innsbrook village limits.

    • A separate permit is required for each structure or other development.
    • The Village Clerk administers and implements the ordinance.
    • A written application, plans and specifications are required.
    “A floodplain development permit shall be required for all proposed construction or other development, including the placement of manufactured homes, in the areas described in Article 2, Section A.”
  • Permit processPartial

    Temporary uses and structures inside Innsbrook village limits.

    • Application is made to the Zoning Administrator.
    • Applicant must submit a legal description or survey, written description or drawing, information on yards, sanitary facilities and parking, and other reasonably required information.
    “Application for a temporary use permit shall be made to the Zoning Administrator and shall be granted upon full compliance with the standards set forth in this Ordinance.”

Rules another office applies inside Village of Innsbrook

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

  • Minimum dwelling sizeSpecified

    Single-family dwellings in the Agricultural Forest Management (AFM) district inside Innsbrook village limits.

    • Basement and garage space are excluded from livable floor area.

    minimum livable floor area: >= 1350 square feet (exclusive of basement or garage space)

    “Each single-family dwelling occupied for residential purposes shall contain a minimum of thirteen hundred-fifty (1,350) square feet of livable floor area, exclusive of basement or garage space.”
  • Minimum lot sizeSpecified

    Dwelling units in the Agricultural Forest Management (AFM) district inside Innsbrook village limits.

    • The stated minimum supports individual wells and septic systems.
    • The minimum district size is 9 acres.

    minimum lot size per dwelling unit: >= 3 acres (or larger)

    “Standards of the district mandate a lot size for each dwelling unit large enough to accommodate individual wells and sewage disposal (septic) systems (3 acres minimum or larger). The minimum district size shall be 9 acres.”
  • SetbacksSpecified

    Individual lots in the R-L Residential Low Density district inside Innsbrook village limits.

    front setback: >= 25 feet · side setback: >= 25 feet · rear setback: >= 25 feet

    “Bulk Regulations for Individual Lots (R-L) Minimum Lot Area 3 acres Minimum Lot Width One hundred (150) feet Minimum Dwelling Size 1,350 Square Feet Yard/Setback Front 25 feet Side 25 feet Rear 25 feet”
  • Building heightSpecified

    Individual lots in the R-L Residential Low Density district inside Innsbrook village limits.

    • Height is measured from grade at the front entrance of the building or structure.

    maximum stories: <= 2 stories · maximum height: <= 40 feet (measured from grade at the front entrance)

    “No more than two (2) stories; up to a maximum height of forty (40) feet, measured from the grade at the front entrance of such building or structure.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of Innsbrook or Warren County directly.

  • Owner-builder exemption — Owner-built construction inside Innsbrook village limits.
  • Building code adopted — Construction inside Innsbrook village limits.
  • Inspections — Building work inside Innsbrook village limits.
  • Certificate of occupancy — Occupancy of buildings inside Innsbrook village limits.
  • Lot coverage — Lots inside Innsbrook village limits.
9 more unanswered
  • Living in an RV
  • Tiny homes
  • Accessory dwellings
  • Septic inspection
  • Well permit
  • Agricultural exemption
  • Driveway access
  • Short-term rentals
  • Permit fees

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 Village of Innsbrook publishes no rule on the point, not that none exists. Warren County’s page lists the county offices to call.

← All of Warren County: county rules, score and offices