Bolthole Index

Warren County, Missouri

Building permits, zoning and septic rules in Truesdale, Missouri

Truesdale, Missouri requires a site plan and a city building permit before constructing or placing a house, modular home, mobile home, trailer or commercial building inside city limits.1 Building permit applications go through Truesdale City Hall; private sewage disposal requires a separate city permit when public sewer is unavailable.23 We could not confirm an adopted general zoning district schedule; ask the Truesdale Planning and Zoning Commission for the rules governing your parcel.

At a glance

Building permit
Required before construction or placement; submit a site plan1
Building codes
City-adopted building and residential codes with amendments4
Minimum home size
1,000 square feet of living space, excluding garage and basement5
Private sewage disposal
City permit required when public sewer is unavailable3
Manufactured-home lot
At least 50 feet wide and 5,000 square feet; not a general residential lot standard6
Manufactured-home setbacks
At least 10 feet of boundary buffer on each side7
Floodplain development
Separate city approval required in covered flood-hazard areas8

Who to call

Building permits

Truesdale City Hall

Starting contact for city building, planning and sewage questions

(636) 456-3166

109 PINCKNEY STREET Truesdale, MO 63380 US

Building permits

Truesdale Building Commissioner / Building Inspector

City building applications, inspections and specified occupancy approvals

Zoning

Truesdale Planning and Zoning Commission

Parcel zoning and planning questions

109 Pinckney Street, Truesdale, MO 63380

Septic permits

Warren County Sanitarian's Office

County onsite sewage questions; confirm any additional review for a Truesdale address

636-456-7169

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

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

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Do you need a building permit in Truesdale, MO?

Truesdale requires a site plan and a building permit before anyone constructs or places a residential house, commercial building, modular home, mobile home or trailer inside city limits.1 Truesdale adopts the 2021 International Residential Code with amendments, along with other building codes and the 2020 National Electrical Code.4 An approved building permit and payment of all fees are required before construction begins, and city inspections apply.9

Truesdale City Hall collects building permits and fees.2 The city provides downloadable building application forms and accepts a printed placement application by mail or at City Hall.10 Ask City Hall for the current fee schedule and inspection arrangements for your specific project.

Does Truesdale have zoning, lot-size rules and setbacks?

We could not confirm an adopted general zoning ordinance or district schedule for Truesdale; ask the Truesdale Planning and Zoning Commission to identify the current zoning map, adopted ordinance and parcel-specific requirements. The city has a Planning and Zoning Commission at City Hall.11

Truesdale does have specific placement standards: a lot receiving a mobile home or house trailer must be at least 50 feet wide and contain at least 5,000 square feet, and cannot already have a dwelling.6 Truesdale requires a boundary buffer of at least 10 feet on each side for manufactured homes, mobile homes and house trailers.7 These placement standards do not establish the minimum lot size for every residential project.6 Ask the commission about ordinary-house setbacks, accessory dwellings and lot coverage before designing a site plan.

How do septic permits and sewer connections work in Truesdale?

Truesdale requires sewer connection for covered buildings abutting a street, alley or right-of-way containing a city public sewer, when that sewer is within 100 feet of the property line; connection is due within 90 days after official notice.12 When public sewer is unavailable, Truesdale allows private sewage disposal subject to city approval, including a written permit signed by the Superintendent before construction.312

Truesdale’s code specifies a $100 private sewage disposal permit fee and bars subsurface soil absorption facilities on lots smaller than 10,000 square feet.3 The Superintendent must be able to inspect underground work before it is covered, and the installation must be completed to the Superintendent’s satisfaction.13

Ask City Hall to connect you with the Superintendent and confirm whether Warren County Sanitarian review is also needed for your address; the Sanitarian’s Office requests a call ahead and submitted design sheets for new septic applications.14 Missouri’s temporary DHSS application-fee suspension does not establish that city ordinance fees have disappeared; local permitting processes may vary.15

Can you live in an RV or tiny home in Truesdale?

We could not confirm Truesdale’s rules for living in an RV or temporarily camping on private land; ask City Hall about your proposed use and duration before bringing an RV onto a lot. A city building permit requirement for trailers does not itself establish permission to occupy an RV.1

A residential home built in Truesdale must contain at least 1,000 square feet of living space, excluding garage and basement, so a smaller proposed tiny house does not meet that stated minimum.5 We could not confirm a separate tiny-home occupancy provision or an owner-builder exemption. Truesdale’s manufactured-home rules require residential use, anchoring, skirting, sanitary facilities and sewage connection; mobile homes or house trailers cannot be placed on a lot already containing a dwelling.16 Ask the Building Commissioner how the city would classify your unit before buying it.

Building a home in Truesdale: what are the steps?

Use Truesdale City Hall as the starting contact for a project inside city limits.2

  1. Establish the sewage option with the city: public sewer connection may be mandatory, while an alternative source needs Board of Aldermen approval if a Truesdale sewer line is unavailable.12
  2. Ask the Planning and Zoning Commission for the adopted parcel requirements, and ask the City Clerk, Truesdale’s Floodplain Administrator, whether the site needs a separate floodplain development permit.8
  3. Submit the site plan, construction details and plot plan, obtain the approved building permit and pay the fees before construction.2
  4. Arrange city building inspections and, for private sewage disposal, inspection before underground portions are covered.913
  5. Ask the Building Inspector which occupancy approval applies: the city’s manufactured/modular-home permit description includes approved occupancy, while business premises need city and Warrenton Fire Department occupancy permits before opening.10

What should you check before buying land in Truesdale?

Confirm whether the parcel is inside Truesdale city limits before choosing a permit counter: outside incorporated limits, Warren County requires structure permits and applies county zoning to unincorporated land.1718 Inside Truesdale, the city’s building codes and sewage requirements apply.43

Ask the City Clerk about mapped flood-hazard areas: Truesdale requires separate floodplain development approval for construction and other development in the areas covered by its ordinance, including manufactured-home placement.8 For access involving MoDOT right-of-way, constructing or modifying a driveway needs a MoDOT permit.19 We could not confirm a separate owner-facing domestic well permit or Truesdale’s city-street driveway requirements; ask Missouri DNR about a proposed well and City Hall about street access. Resolve these questions alongside sewer availability before committing to a building layout.

Watch-outs

  • A Truesdale mobile-home lot meeting the 5,000-square-foot placement minimum can still be too small for subsurface sewage absorption, which requires at least 10,000 square feet.63
  • Truesdale’s 1,000-square-foot residential living-space minimum excludes garage and basement space.5
  • We could not confirm RV occupancy or temporary camping permission in Truesdale; ask City Hall before using a lot as a place to live while building.20

Sources

  1. Chapter 500, Article III: Building Permits (Truesdale), quoted and re-checked
  2. Chapter 500, Article III: Building Permits (Truesdale), quoted and re-checked
  3. Section 710.030 Private Sewage Disposal (Truesdale), quoted and re-checked
  4. Chapter 500, Article I: Building Codes (Truesdale), quoted and re-checked
  5. Section 500.025 Residential Minimum Building Requirements (Truesdale), quoted and re-checked
  6. Chapter 520: Manufactured Homes and House Trailers (Truesdale), quoted and re-checked
  7. Chapter 520: Manufactured Homes and House Trailers (Truesdale), quoted and re-checked
  8. Chapter 405: Flood Hazard Prevention (Truesdale), quoted and re-checked
  9. Chapter 500, Article I: Building Codes (Truesdale), quoted and re-checked
  10. Truesdale Building Commissioner / Building Inspector (cityoftruesdalemo.org)
  11. Truesdale Planning and Zoning Commission (cityoftruesdalemo.org)
  12. Chapter 710: Sewer Use Regulations (Truesdale), quoted and re-checked
  13. Section 710.030 Private Sewage Disposal (Truesdale), quoted and re-checked
  14. Warren County Sanitarian's Office (warrencountymo.org)
  15. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  16. Chapter 520: Manufactured Homes and House Trailers (Truesdale), quoted and re-checked
  17. 2023 Structure Packet, quoted and re-checked
  18. The Zoning Order for Warren County, Missouri, quoted and re-checked
  19. Permits | Missouri Department of Transportation (Missouri statewide rule), quoted and re-checked
  20. Truesdale City Hall (cityoftruesdalemo.org)

Written October 12, 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 Truesdale

Truesdale’s own rules

  • Building permitRequired

    Commercial buildings, residential houses, modular homes, mobile homes, and trailers placed or constructed inside Truesdale city limits.

    • A site plan must be submitted before obtaining the permit.
    “No person, corporation or entity of any kind, including any governmental entity, shall build, construct or place a commercial building, residential house, modular, mobile home or trailer within the City limits of the City of Truesdale without first submitting a site plan and obtaining a permit.”
  • Building code adoptedAdopted

    Building construction inside Truesdale city limits.

    • The City adopts the listed codes with amendments; the Building Official/Code Official is read as the Building Commissioner.
    “The Board of Aldermen of the City of Truesdale hereby adopts the following Codes: 2021 International Building Code, 2021 International Residential Code (with amendments), 2021 International Mechanical Code, 2021 International Plumbing Code, 2021 International Existing Building Code, 2021 International Property Maintenance Code, 2021 International Fuel Code, 2021 International Energy Conservation Code, and the 2020 NFPA 70 National Electrical Code and amendments thereto are hereby referred to, adopted, and make a part hereof as if fully set out in this Chapter.”
  • InspectionsRequired

    Building construction inside Truesdale city limits.

    • The City may contract with a qualified person or company for inspections and code enforcement.
    “An approved permit must be obtained and all fees paid prior to any construction on the project. City inspections will be performed by the Board members appointed or their representative. Engineer Building Inspector inspections will be performed by a competent person or persons hired by the Board of Aldermen for this purpose.”
  • Minimum dwelling sizeSpecified

    Residential homes inside Truesdale city limits.

    • Garage and basement space is excluded from the minimum living-space calculation.
    • The ordinance was adopted by Ordinance 863 on April 10, 2019.

    minimum living space: >= 1000 square feet (excluding garage and basement)

    “Any person(s), corporations, LLC, partnership or legal entity of any kind in building a residential home in the City of Truesdale, shall contain a minimum living space of one thousand (1,000) square feet excluding garage and basement.”
  • Minimum lot sizeSpecified

    Lots receiving a manufactured home, mobile home, or house trailer inside Truesdale city limits.

    • The rule does not establish a general minimum lot size for all residential development; it applies to placement of the listed homes or trailers.
    • No mobile home or house trailer may be installed on a lot already having a dwelling.

    minimum lot width: >= 50 feet · minimum lot area: >= 5000 square feet

    “The minimum size lot to receive a mobile home or house trailer shall have a width of fifty (50) feet and a minimum lot area of five thousand (5,000) square feet.”
  • SetbacksSpecified

    Manufactured homes, mobile homes, and house trailers inside Truesdale city limits.

    • The ordinance requires a boundary-line buffer on each side of the lot.

    minimum boundary line buffer on each side: >= 10 feet

    “There shall be a minimum boundary line buffer of ten (10) feet on each side of the lot.”
  • Manufactured homesLimited

    Manufactured homes, mobile homes, and house trailers placed inside Truesdale city limits.

    • No more than one mobile home or house trailer per lot.
    • No placement on a lot already having a dwelling.
    • Minimum lot width is 50 feet and minimum area is 5,000 square feet.
    • City permit required before placement.
    • Ten-foot boundary buffer on each side.
    • Two off-street parking spaces required.
    • Residential use only; permanent anchoring, skirting, sanitary facilities, and sewage connection required.
    • Tie-down within 15 days and skirting within 60 days.
    • HUD standards and seals apply.

    maximum mobile homes or house trailers per lot: 1 home · minimum lot width: >= 50 feet · minimum lot area: >= 5000 square feet · boundary buffer each side: 10 feet · tie-down deadline: 15 days (after location within City limits) · skirting deadline: 60 days (after location within City limits)

    “Manufactured homes, mobile homes and house trailers shall be used exclusively for residential purposes, and no signs or advertisements will be permitted. No manufactured homes, mobile homes and house trailers or parts thereof shall be used for storage of any kind.”
  • Septic permitRequired

    Private sewage disposal systems inside Truesdale city limits when public sanitary or combined sewer is unavailable.

    • A written permit signed by the Superintendent is required before construction.
    • The City code sets a $100 permit fee.
    • Systems must comply with Missouri DNR recommendations.
    • No subsurface soil absorption permit may issue for a lot under 10,000 square feet.
    • Additional Health Officer requirements may apply.

    private sewage disposal permit fee: 100 USD · minimum lot area for subsurface soil absorption: >= 10000 square feet (No permit shall be issued for such facilities below this lot area.)

    “Before commencement of construction of a private sewage disposal system, the owner shall first obtain a written permit signed by the Superintendent.”
  • Septic inspectionRequired

    Private sewage disposal system installation inside Truesdale city limits.

    • The Superintendent may inspect at any construction stage and before underground portions are covered.
    • Inspection is to occur within eight hours after notice.

    inspection response time: 8 hours (after receipt of notice)

    “A permit for a private sewage disposal system shall not become effective until the installation is completed to the satisfaction of the Superintendent. He/she shall be allowed to inspect the work at any stage of construction and before any underground portions are covered. The inspection shall be made within eight (8) hours of the receipt of notice by the Superintendent.”
  • Off-grid sanitationLimited

    Private sewage disposal inside Truesdale city limits where public sewer is unavailable.

    • Privies, septic tanks, cesspools, and similar facilities are unlawful except as provided by Chapter 710.
    • A private sewage disposal system may be used when public sewer is unavailable, with City permit and inspection requirements.
    “Except as hereinafter provided, it shall be unlawful to construct or maintain any privy, privy vault, septic tank, cesspool or other facility intended or used for the disposal of sewage.”
  • Mandatory utility hookupSewer (with conditions)

    Buildings used for human occupancy, employment, recreation, or other purposes inside Truesdale city limits where the public sewer is within 100 feet of the property line.

    • Connection must occur within 90 days after official notice.
    • If public sewer is unavailable, private sewage disposal is allowed subject to City requirements.
    • If a Truesdale sewer line is unavailable, an alternative source must be submitted to the Board of Aldermen for approval.

    public sewer distance from property line: <= 100 feet · connection deadline after official notice: 90 days

    “The owner of all houses, buildings or properties used for human occupancy, employment, recreation or other purposes, situated within the City and abutting on any street, alley or right-of-way in which there is now located or may in the future be located a public sanitary or combined sewer of the City, is hereby required at his/her expense to install suitable toilet facilities therein and to connect such facilities directly with the proper public sewer in accordance with the provision of this Chapter within ninety (90) days after date of official notice to do so, provided that said public sewer is within one hundred (100) feet of the property line.”
  • Building in a floodplainRequired

    Development in Truesdale city areas identified as unnumbered A Zones on the Warren County FIRM panels specified by Chapter 405.

    • The chapter applies to unnumbered A Zones on Warren County maps dated November 4, 2009, panels 29219C0134D, 29219C0142D, 29219C0153D, and 29219C0165D, as amended, and future revisions.
    • The City Clerk is Floodplain Administrator.
    • A separate permit is required for each structure or other development.
    • Construction and other development must comply with Chapter 405 and applicable regulations.
    “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 Section 405.020(A). No person, firm, corporation or unit of government shall initiate any development or substantial improvement or cause the same to be done without first obtaining a separate floodplain development permit for each structure or other development.”
  • Permit processPublished (with conditions)

    Construction permitting inside Truesdale city limits.

    • Submit a site plan and obtain a permit before construction or placement.
    • Submit construction plans and a plot plan.
    • Pay all fees before construction.
    • Permits and fees are collected at Truesdale City Hall.
    • Manufactured homes and modular homes require a Building Inspector permit and two inspections, with additional inspection costs possible.
    “The applicant for all construction is required to submit plans showing the details of the construction, including, but not limited to, the size, the plans, type of material to be used, and if the material is new or used. A plot plan showing the area of the construction should also be included. An approved permit must be obtained and all fees paid prior to any construction on the project.”

Still unanswered

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

  • Owner-builder exemption — Owner-builders constructing inside Truesdale city limits.
  • Certificate of occupancy — Occupancy of buildings inside Truesdale city limits.
  • Local zoning — Land inside Truesdale city limits.
  • Zoning districts — Zoning districts and dimensional schedules inside Truesdale city limits.
  • Lot coverage — Development inside Truesdale city limits.
9 more unanswered
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Accessory dwellings
  • Well permit
  • Agricultural exemption
  • Driveway access
  • 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 Truesdale publishes no rule on the point, not that none exists. Warren County’s page lists the county offices to call.

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