Bolthole Index

Gentry County, Missouri

Building permits, zoning and septic rules in King City, Missouri

King City, Missouri, requires a city building permit for construction, enlargement, alteration and placement of trailers or temporary structures inside city limits.1 King City in Gentry County has municipal zoning provisions and prohibits permanent RV residency.23 Private sewage systems need city approval, and state or county health requirements can also apply.45

At a glance

Building permits
Required for construction and structure placement; limited repair exception1
Zoning
Municipal zoning provisions include manufactured-home controls2
RV residency
No permanent residence; temporary stays limited to 14 days per calendar month on a lot with an existing permitted residence or mobile home3
Manufactured-home lots
Minimum 10,000 square feet; maximum 50% coverage by all structures67
Private sewage
City approval and inspection; additional health requirements may apply485
Wells
Missouri permits apply to contracted work; landowners may install their own well or pump without that permit9

Who to call

Building permits

King City — Board of Aldermen / City Water Superintendent

Municipal building-permit applications and building inspections; ask the City for current forms and submission arrangements.

Septic permits

King City — Sewer Inspector

City private sewage-disposal approvals and inspections; building-sewer connections.

Septic permits

Missouri DHSS Onsite Wastewater Treatment Program

State onsite wastewater permitting contact; confirm the health approval needed alongside King City’s municipal sewage approval.

(573) 751-6095 ext. 5

[email protected]

930 Wildwood Dr, Jefferson City, MO 65102

Online permits →

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

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Do you need a building permit in King City, MO?

King City requires a building permit before constructing, enlarging or altering a building, or moving a house trailer, temporary structure or prebuilt structure onto land inside city limits.1 The published provisions describe a limited exception for ordinary repairs and minor alterations involving no major structural changes and costing no more than $300; ask the City to confirm that your specific repair qualifies before proceeding.1 The published building-permit fee is $5, but the code’s stated legislative cutoff is December 14, 2009, so confirm the current charge with the City.10 Skipping a required building permit can lead to an ordinance violation and cutoff of city-controlled utilities.1

Who handles building permits and inspections in King City?

King City’s Board of Aldermen establishes the building-permit forms and application procedure, while the City Water Superintendent is designated to inspect buildings and structures for compliance with the building-permit article.11 Ask the City for the current application form, where to submit plans and how to arrange the building inspection.11 The municipal building-permit process covers structures inside King City; for a parcel outside city limits, use the separate Gentry County guide.1 Private sewage approval is a separate city process through the sewer inspector, and additional state or county health requirements may apply.125

Does King City have zoning, lot-size and setback rules?

King City has municipal zoning provisions, including specific controls for manufactured homes.2 A manufactured-home lot must have at least 10,000 square feet, and all buildings and structures together may cover no more than 50% of that lot.67 Accessory structures on manufactured-home lots are limited to 15 feet in height.13 Each manufactured-home lot needs a paved or graveled driveway at least 20 feet by 20 feet connected to a platted street or alley.14 These dimensions apply to manufactured-home lots; they do not establish a general minimum lot size or height limit for every King City home.613 We could not confirm general zoning-district schedules or parcel-specific setbacks; ask the City to identify the applicable requirements before choosing a building footprint.

How do septic permits work inside King City?

Where public sewer is unavailable, King City requires a permitted private sewage-disposal system rather than allowing an unrestricted off-grid sewage arrangement.4 Before construction, the owner must obtain the sewer inspector’s written permit using a City form and supply any plans, specifications and information the inspector requires.12 The published city private sewage-disposal permit and inspection fee is $10; confirm the current amount because the code includes legislation through 2009.10 Notify the city inspector for final inspection before covering underground work, and complete the installation to the inspector’s satisfaction.8 Missouri health requirements may add another approval: DHSS lists Gentry County under its state program, but confirm the approval needed for an incorporated King City address with DHSS and the City.155 Missouri requires construction approval for most onsite systems, with some residential exemptions; do not start until a permit or exemption is confirmed.16

Can you live in an RV or tiny home in King City?

King City prohibits using a recreational vehicle as a permanent residence.3 Temporary RV residency is limited to 14 days in any calendar month, and the RV must be on a lot where a permitted residence or mobile home already exists.3 That condition means King City’s RV provision does not authorize living in an RV on a vacant lot while building a home.3 Moving a trailer or temporary structure onto land also falls under the city building-permit requirement.1 We could not confirm a specific tiny-home occupancy rule or an accessory-dwelling provision; ask the City about the proposed dwelling’s classification, placement and occupancy before buying it. Do not assume that a small dwelling qualifies under the temporary RV provision.3

What are the steps to building a home in King City?

1. Ask the City to confirm the parcel is inside King City and identify the zoning provisions that apply to your proposed structure, especially if it is manufactured housing.2 2. Request the City’s current building-permit form and submission procedure, then obtain the building permit before construction or structure placement.111 3. Establish the sewage solution before starting underground work: where public sewer is unavailable, obtain city private sewage approval and confirm any additional health approval with DHSS.412515 4. Arrange building inspections with the City Water Superintendent and notify the sewer inspector before covering private sewage work.178 We could not confirm King City’s certificate-of-occupancy requirement or an owner-builder exemption; ask the City to resolve both before setting a move-in date.

What should you check before buying land in King City?

For a King City parcel needing septic, budget for a site evaluation rather than assuming a conventional drain field will work: only 0.6% of Gentry County soils are rated not limited for conventional septic drain fields, a countywide rating that does not determine an individual lot’s suitability or make septic impossible.18 Missouri permits apply to contracted well work, although landowners may install their own well or pump without that permit under the cited guidance.9 Missouri requires a permit for floodplain development and an engineering No-Rise Certificate for proposed regulatory-floodway development; ask King City to identify the applicable community administrator.19 Gentry County’s effective property-tax rate is about 1%, a countywide estimate rather than a quote for a particular King City parcel.20 We could not confirm municipal subdivision rules or an agricultural exemption; ask the City before dividing land or treating a farm building as exempt.

Watch-outs

  • King City’s temporary RV allowance requires an existing permitted residence or mobile home on the lot; it does not authorize permanent RV residency.3
  • Published city permit fees come from a code with a 2009 legislative cutoff; confirm current building and sewage charges with the City.10
  • Missouri’s temporary suspension of state onsite wastewater application fees does not establish a waiver of King City’s separate sewage charges.2110

Sources

  1. Article II: Building Permits (King City), quoted and re-checked
  2. Table of Contents - City of King City, MO (King City), quoted and re-checked
  3. ecode360.com (King City), quoted and re-checked
  4. Article I: Public and Private Sewers (King City), quoted and re-checked
  5. Article I: Public and Private Sewers (King City), quoted and re-checked
  6. Article I: Manufactured Homes — Installation and Maintenance (King City), quoted and re-checked
  7. Article I: Manufactured Homes — Installation and Maintenance (King City), quoted and re-checked
  8. Article I: Public and Private Sewers (King City), quoted and re-checked
  9. Water Wells - PUB2945 (King City), quoted and re-checked
  10. Article II: Building Permits (King City), quoted and re-checked
  11. King City — Board of Aldermen / City Water Superintendent (ecode360.com)
  12. King City — Sewer Inspector (ecode360.com)
  13. Article I: Manufactured Homes — Installation and Maintenance (King City), quoted and re-checked
  14. Article I: Manufactured Homes — Installation and Maintenance (King City), quoted and re-checked
  15. Missouri DHSS Onsite Wastewater Treatment Program (health.mo.gov)
  16. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  17. Article II: Building Permits (King City), quoted and re-checked
  18. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  19. Floodplain Forms (Missouri statewide rule), quoted and re-checked
  20. Effective property tax rate: Bolthole Index county data
  21. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked

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 King City

King City’s own rules

  • Building permitRequired

    Buildings, enlargements, alterations, house trailers, temporary structures, and prebuilt structures inside King City city limits.

    • Ordinary repairs and minor alterations not involving a change in major structural parts and not involving a cost exceeding $300 do not require a permit.
    • The code states a $5 permit fee.
    • Failure to obtain a permit may result in an ordinance violation and utility cutoff.

    permit fee: 5 USD · minor-alteration cost threshold: <= 300 USD (Only where no major structural parts are changed)

    “No building of any type or nature shall be built, enlarged or altered, nor shall any house trailer or temporary structure or prebuilt structure be moved on any land in the City of King City, Missouri, until a building permit be first applied for and obtained from said City. Ordinary repairs and minor alterations not involving any change in major structural parts or involving a cost of not more than three hundred dollars ($300.00) shall not require the issuance of a permit.”
  • InspectionsRequired

    Buildings and structures subject to the municipal building-permit article inside King City city limits.

    • The City Water Superintendent is designated as the person to inspect buildings and structures for compliance with the article.
    “The City Water Superintendent is hereby designated as the person to inspect all buildings or structures to see that the provisions of this Article are complied with as set out by this Article.”
  • Local zoningPresent

    Land inside King City city limits; the municipal code contains Chapter 400, Zoning Regulations, including manufactured-home land-use controls.

    • The published code states that it includes legislation through December 14, 2009.
    “Chapter 400 Zoning Regulations (Section 400.010 – Section 400.070)”
  • Minimum lot sizeSpecified

    Lots used for manufactured homes inside King City city limits.

    • The cited minimum applies to manufactured-home placement, not necessarily to every residential use.

    minimum lot area: >= 10000 square feet

    “Minimum lot area. Ten thousand (10,000) square feet.”
  • Lot coverageSpecified

    Manufactured-home lots inside King City city limits.

    • The cited coverage limit applies to all buildings or structures on a manufactured-home lot.

    maximum lot coverage: <= 50 percent (All buildings or structures)

    “Maximum lot coverage (all buildings or structures). Fifty percent (50%).”
  • Building heightSpecified

    Accessory structures on manufactured-home lots inside King City city limits.

    • The cited height limit is for accessory structures, not a general principal-building height limit.

    maximum accessory-structure height: <= 15 feet

    “Maximum height of accessory structure. Fifteen (15) feet.”
  • Living in an RVTemporary only (with conditions)

    Recreational-vehicle occupancy inside King City city limits.

    • A recreational vehicle may not be used as a permanent residence.
    • Temporary residency may not exceed 14 days in any calendar month.
    • The RV must be on a lot where a permitted residence or mobile home exists.

    temporary residency limit: <= 14 days per calendar month

    “A recreational vehicle is not a mobile home and shall not be used as a place of permanent residence within the City limits. A recreational vehicle may be used for temporary residency not to exceed fourteen (14) days in any calendar month so long as the same is on a lot upon which a permitted residence or mobile home exists.”
  • Who permits septicMixed (with conditions)

    Private sewage systems inside King City city limits are governed by the City's sewer article, with Missouri health standards and possible additional state or county health requirements also applying.

    • The City sewer article requires compliance with Missouri Department of Public Health recommendations.
    • The article states that additional requirements may be imposed by the State or County Health Officer.
    • DHSS or a local agency typically regulates domestic wastewater systems statewide.
    “No statement contained in this Section shall be construed to interfere with any additional requirements that may be imposed by the Health Officer of the State or County.”
  • Septic inspectionRequired

    Private sewage disposal systems inside King City city limits.

    • The inspector may inspect at any construction stage.
    • The applicant must notify the inspector for final inspection before underground portions are covered.
    • The City code specifies inspection timing after notice: within four hours for morning notice or eighteen hours for afternoon notice.

    morning-notice inspection deadline: <= 4 hours · afternoon-notice inspection deadline: <= 18 hours

    “A permit for a private sewage disposal system shall not become effective until the installation is completed to the satisfaction of the inspector. He/she shall be allowed to inspect the work at any stage of construction and, in any event, the applicant for the permit shall notify the inspector when the work is ready for final inspection and before any underground portions are covered.”
  • Off-grid sanitationLimited

    Off-grid sewage disposal inside King City city limits where public sewer is unavailable.

    • Privies, privy vaults, septic tanks, cesspools, and other sewage-disposal facilities are generally unlawful except as provided by the sewer article.
    • A permitted private sewage disposal system is required where public sewer is unavailable.
    • State and county health requirements may add conditions.
    “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.”
  • Driveway accessRequired

    Manufactured-home lots inside King City city limits.

    • The driveway must be paved or graveled, at least 20 feet by 20 feet, and connected to a platted street or alley.

    minimum driveway width: >= 20 feet · minimum driveway depth: >= 20 feet

    “Each manufactured home lot shall be provided with a paved or graveled driveway measuring at least twenty (20) feet by twenty (20) feet with said graveled area connected to a platted street or alley.”
  • Permit feesPublished (with conditions)

    Municipal building, private sewage-disposal, and building-sewer permits inside King City city limits.

    • The building code states a $5 building permit fee.
    • The private sewage-disposal provision states a $10 permit and inspection fee.
    • The building-sewer provision states $50 for residential or commercial buildings and $100 for industrial building-sewer permits.
    • The code index states that the published code includes legislation through December 14, 2009.

    building permit fee: 5 USD · private sewage disposal permit and inspection fee: 10 USD · residential or commercial building sewer permit: 50 USD · industrial building sewer permit: 100 USD

    “Residential or commercial buildings $50.00 Industrial building sewer permit $100.00 A permit and inspection fee shall be paid to the City at the time the application is filed.”

Rules another office applies inside King City

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

  • Well permitRequired

    Water-well construction or repair serving land inside King City city limits.

    • Landowners may install their own well or pump without a permit under the cited Missouri guidance.
    • Contracted or commercial work is subject to Missouri well permitting requirements.
    “A restricted water well or pump installation permit is required for someone to contract these activities or to direct the installation. Landowners may install their own well or pump without a permit pursuant to the above mentioned law and rules.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask King City or Gentry County directly.

  • Owner-builder exemption — Owner-builders performing construction inside King City city limits.
  • Certificate of occupancy — Certificate-of-occupancy requirements for land and buildings inside King City city limits.
  • Zoning districts — Zoning districts and district schedules inside King City city limits.
  • Tiny homes — Tiny-home occupancy inside King City city limits.
  • Accessory dwellings — Accessory dwelling units inside King City city limits.
4 more unanswered
  • Agricultural exemption
  • Subdividing land
  • 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 King City publishes no rule on the point, not that none exists. Gentry County’s page lists the county offices to call.

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