Bolthole Index

Adair County, Missouri

Building permits, zoning and land rules in Adair County, Missouri

79Index Score / 100
#8 of 115 in Missouri

Unincorporated Adair County, Missouri does not require a county building permit for a home1. Inside Kirksville and Novinger, city building permits are required23. Kirksville administers municipal zoning; unincorporated Adair County’s full zoning status could not be confirmed45. Missouri DHSS handles qualifying septic systems throughout Adair County; Kirksville also requires a city private wastewater disposal permit where public sewer is unavailable67.

At a glance

Building permit
Not required by the county for homes in unincorporated areas; Kirksville and Novinger require city building permits123
Zoning
Countywide status not fully confirmed; Kirksville administers zoning and special-use approval inside city limits849
Septic permits
Missouri DHSS handles qualifying systems; Kirksville also requires a city private wastewater disposal permit where public sewer is unavailable67
Septic without a permit
Qualifying residential lots may be exempt; exempt systems must stay more than 10 feet from adjoining property lines and cause no nuisance or contamination6
Well permits
Landowners can install or repair their own well or pump without a permit; anyone hired to do it needs a restricted permit10
911 addressing
Required through the County Clerk before new construction; driveway and structure must be staked first, $35 marker fee11
Agricultural exemption
Farm buildings and structures are exempt from any county fire-protection or fire-prevention ordinance permit requirement12
Septic soil difficulty
0% of mapped soils are rated “not limited” for a conventional drain field; site evaluation or an alternative design may be needed13

Who to call

Septic permits

Missouri Department of Health and Senior Services, Onsite Wastewater Treatment Program

OWTS (septic) construction permits for Adair County, which the state's own county-by-county lookup lists as DHSS-permitted rather than delegated to a local health department

(573) 751-6095

OnsiteProgram@health.mo.gov

930 Wildwood Dr, Jefferson City, MO 65102

Also useful

Adair County Clerk (E-911 Addressing)

Issues E-911 addresses for new construction in Adair County; the office is on the 2nd floor of the Adair County Courthouse

(660) 665-3350

scollop@adaircomo.gov

106 W Washington St, Kirksville, MO 63501

Building permits

City of Kirksville, Codes and Planning

Building permits for new construction, additions, decks and manufactured-home placement, and zoning administration, within Kirksville city limits only

660-627-1225

201 S. Franklin St., Kirksville, MO 63501

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

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Do you need a building permit in Adair County, Missouri?

Unincorporated Adair County does not require a county building permit for a home1. That answer does not remove separate septic permits, floodplain development permits, state land-disturbance permits, or MoDOT driveway permits when their conditions apply6141516. Inside Kirksville, the city requires a building permit for a new structure, addition, deck, shed or mobile home within city limits217. Inside Novinger, the Board of Aldermen issues or approves a separate building permit for each structure, including construction, alterations, moving and demolition3. Missouri DHSS remains the authority for qualifying septic systems, and Kirksville also requires a private wastewater disposal permit where public sewer is unavailable67. Kirksville uses the 2021 International Code Council codes and the 2020 National Electrical Code for construction18. Missouri also prevents a county fire-protection or fire-prevention ordinance from requiring a permit for work on farm buildings or farm structures, but that protection does not erase septic, environmental, municipal or floodplain requirements1920.

Who issues building permits and other approvals in Adair County?

Adair County has no county building-permit requirement for homes in unincorporated areas1. Inside Kirksville, Codes and Planning issues city building permits and administers municipal zoning1724. Inside Novinger, the Board of Aldermen issues or approves building permits3. Missouri DHSS handles qualifying onsite-wastewater permits throughout Adair County, while Kirksville additionally requires a city private wastewater disposal permit where public sewer is unavailable67. New construction also needs an E-911 address from the Adair County Clerk; mark the driveway and structure location first and pay the $35 address-marker fee in advance to the County Treasurer2122. The E-911 step is not a general driveway-construction permit22. A driveway on MoDOT right-of-way separately requires a MoDOT driveway permit16.

Does Adair County have zoning?

We could not confirm the full zoning status of unincorporated Adair County; the county statement about having no zoning regulations for large-scale facilities does not settle other land-use rules85. Inside Kirksville, the city administers Chapter 44 zoning and publishes zoning maps423. Kirksville rezoning requires a project inquiry form, agent authorization if applicable, an application and a fee submitted to the City Planner9. Adjacent landowners within 185 feet must be notified, and the City Planner publishes notice at least 15 days before the hearing; the Planning and Zoning Commission recommends action and the City Council decides24. A Kirksville special-use permit is available only where the Municipal Code allows the use and follows a separate application and hearing process9. Missouri DHSS still handles qualifying septic systems, with an additional Kirksville private wastewater disposal permit where public sewer is unavailable67. For unincorporated parcels, ask the County Commission about setbacks, dwelling size, RV use and subdivision review.

How do septic permits work in Adair County?

Missouri DHSS handles septic permits in Adair County, including qualifying properties inside Kirksville2526. Kirksville also requires a city private wastewater disposal permit where public sanitary sewer is unavailable7. A septic construction permit is required when a property is smaller than three acres or next to a public utility lake or Corps of Engineers property276. A qualifying single-family lot of at least 3 acres may be exempt; ask DHSS to confirm eligibility before work begins628. A qualifying single-family lot of at least ten acres can be exempt only if no residential onsite system is within 360 feet of another and density stays at no more than one residence per ten acres; lake-adjacent lots cannot use that exemption6. An exempt system must remain more than 10 feet from every adjoining property line and cannot send effluent onto neighboring land, contaminate water or create a nuisance6. Installers must be registered with DHSS even when no permit is required6. A system serving a non-residential structure, such as a shop or business building, needs a permit regardless of lot size29. No mapped Adair County soils are rated “not limited” for conventional drain fields; site evaluation or an alternative design may be needed, but septic is not necessarily impossible13.

Can you live in an RV or tiny home on your land in Adair County?

Adair County's rules for living in an RV, temporary camping, tiny-home occupancy and accessory dwellings on private land could not be confirmed, so the safe answer is to ask the County Commission about the exact parcel and proposed use8. Inside Kirksville, zoning districts and the city's zoning ordinance govern land use, and a new structure or placement of a mobile home requires a city building permit42. A tiny home or RV also does not avoid wastewater rules: homes without public sewer rely on an OWTS, and qualifying systems require state approval3031. For water, Missouri allows landowners to install their own well or pump without a permit, while a person hired to perform the work needs the applicable restricted permit10.

What are the steps to build on land in Adair County?

  1. Locate the parcel: unincorporated Adair County has no county home building permit, while Kirksville requires a city building permit and zoning review124.
  1. Contact Missouri DHSS early about septic approval and site design; inside Kirksville, also arrange the city private wastewater disposal permit if public sewer is unavailable67.
  1. If construction will disturb one acre or more, or is part of a larger plan reaching one acre, obtain the Missouri land-disturbance stormwater permit through MoDNR ePermitting and prepare the required pollution-prevention plan15.
  1. For floodplain development, obtain the applicable community floodplain development permit; regulatory-floodway work also needs an engineering No-Rise Certificate before permit issuance14.
  1. Mark the driveway and structure, then request the E-911 address from the County Clerk and pay the $35 marker fee2122.
  1. Obtain a MoDOT driveway permit if access crosses MoDOT right-of-way16.

What should you check before buying land in Adair County?

Before buying an Adair County property with an existing septic system, ask whether the buyer or lender requires an inspection; private real-estate assessments must be performed by a person licensed by Missouri DHSS, an inspection is not established as a universal requirement for every sale32. Check soils before assuming a conventional drain field will work: no mapped Adair County soils are rated “not limited,” so site evaluation or an alternative design may be needed13. Confirm the septic-permit category with DHSS because lot size, lake adjacency, system spacing, wastewater type and design flow affect requirements6. Inside Kirksville, budget for building-permit fees and confirm zoning and any special-use approval before closing33424. Verify floodplain status and the community development-permit path before moving dirt14. Confirm whether access needs a MoDOT driveway permit, then follow the County Clerk’s E-911 address sequence1622.

Watch-outs

  • Septic permitting authority for Adair County recently moved from the county to the state; older references to the county health department issuing OWTS permits are out of date, and applicants should contact Missouri DHSS directly25.
  • Unincorporated Adair County does not require a county home building permit, but building inspections and certificate-of-occupancy requirements could not be confirmed; ask the County Commission before construction1.
  • Adair County's countywide rules on RV occupancy, tiny homes, minimum lot size, setbacks and building height could not be confirmed; ask the County Commission rather than assuming no rule applies8.
  • Kirksville’s Airbnb approval for 2701 Sunset Cove Drive prohibits renting the entire property and requires the owner to stay overnight while guests occupy rooms; ask Codes and Planning about the proposed rental use at your own address34.

Sources

  1. State of Missouri - County Building Codes dataset (2026 county census)
  2. Kirksville: New Construction Permit (Adair County), quoted and re-checked
  3. Novinger: Chapter 502 Building Permits — City of Novinger, Missouri (Adair County), quoted and re-checked
  4. Kirksville: Code of Ordinances, Chapter 44, Sec. 44-328 — Lot area per family (Adair County), quoted and re-checked
  5. Adair County Missouri Government, quoted and re-checked
  6. OWTS Construction Permit Process, quoted and re-checked
  7. Kirksville: Code of Ordinances, Chapter 40, Sec. 40-386 — Private wastewater disposal (Adair County), quoted and re-checked
  8. Adair County, Missouri (official) (2026 county census)
  9. City of Kirksville - Zoning Information, quoted and re-checked
  10. Water Wells - PUB2945 | Missouri Department of Natural Resources, quoted and re-checked
  11. E-911 Address Request Application, quoted and re-checked
  12. revisor.mo.gov, quoted and re-checked
  13. 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
  14. Floodplain Forms, quoted and re-checked
  15. Construction Land Disturbance Permits, quoted and re-checked
  16. Permits | Missouri Department of Transportation (Missouri statewide rule), quoted and re-checked
  17. City of Kirksville, Codes and Planning (kirksville.gov)
  18. City of Kirksville - Building & Remodeling Information, quoted and re-checked
  19. Missouri Revised Statutes § 64.620 — Building restrictions — limitations on regulations, quoted and re-checked
  20. RSMo Section 64.003 — Farm buildings and farm structures (Missouri statewide rule), quoted and re-checked
  21. Adair County Clerk (E-911 Addressing) (adaircountymissouri.com)
  22. E-911 Address Request Application | Adair County MO, quoted and re-checked
  23. Zoning Information, quoted and re-checked
  24. City of Kirksville - Codes and Planning, quoted and re-checked
  25. Onsite Sewage | Adair County Health Department, quoted and re-checked
  26. Adair County Health Department - Onsite Sewage (2026 county census)
  27. Missouri Department of Health and Senior Services, Onsite Wastewater Treatment Program (health.mo.gov)
  28. OWTS Construction Permit Process (Missouri statewide rule), quoted and re-checked
  29. health.mo.gov, quoted and re-checked
  30. Onsite Sewage | Adair County Health Department, quoted and re-checked
  31. Onsite Sewage, quoted and re-checked
  32. Onsite Sewage | Adair County Health Department, quoted and re-checked
  33. Exhibit A - Fee Schedule 2026, quoted and re-checked
  34. Special Use Permit to Operate an Airbnb, 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.

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Compared with neighboring counties

Like 4 of the 5 neighbors with published rules, Adair County requires no county building permit for a home.

RuleAdair CountySchuyler CountyMacon CountyKnox CountySullivan CountyPutnam CountyScotland County
Building permitNot requiredLimitedNot requiredNot publishedNot requiredNot requiredNot required
County zoningNoNot publishedNoNot publishedNot publishedNot publishedNot published
Septic permitsDHSSDHSSDHSSMO Dept. of Health & Senior ServicesMO Dept. of Health & Senior ServicesDHSSMO DHSS Onsite Wastewater Treatment Program

County locator

Adair County in Missouri

79
County map
Adair County highlighted among the Missouri counties · colored by Index score

How Adair County scores

Seclusion69100% ev.
Self-Sufficiency58100% ev.
Admin Boringness8790% ev.
Durability65100% ev.
Property Autonomy47100% ev.
Carry Cost81100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$198kTypical home
0.8%Property tax
$4,098Land / acre
40.7"Annual rain
7.6% of yrsSevere drought
7.6 / yr (+6.7)Mid-century 100°F days
16.5 daysMid-century dry spell
1.95" (+7.8%)Mid-century 1-day rain
1.88×Wildfire change factor
100%Forward climate coverage
$1,725Home insurance / yr
3.6% / yrInsurance growth
1.72%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
26,006People within 30 min
576,171People within 2 hr
28,251Radius comparison (15 mi)
44.3People / sq mi
0.3%Federal land
63.7%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
31.4%Wooded land
32.3 tonsBiomass / forest ac
52°FAvg temp

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Cities and towns in Adair County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet researched: Brashear · Village of Gibbs · Village of Millard

Answers from the rulebook for Adair County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Adair County rules

  • Local zoningVaries (with conditions)

    Aggregate local-zoning status across Adair County, including incorporated City of Kirksville and county areas; the county aggregate does not imply that Adair County administers municipal zoning.

    • Kirksville administers zoning within city limits through its City Planner, Planning and Zoning Commission, and City Council.
    • Kirksville rezoning requires an application, fee, public notice at least 15 days before the hearing, and Planning and Zoning Commission and City Council action.
    • Adair County states that it currently has no zoning regulations for development of large-scale facilities; the source does not resolve all other unincorporated land-use controls.

    Kirksville rezoning public notice lead time: >= 15 days

    “To rezone any parcel of land within the City of Kirksville, the applicant must submit the following documents to the City Planner:”
  • Septic inspectionLimited

    Inspection of an onsite wastewater treatment system in Adair County, particularly during a real-estate transaction.

    • The county health department describes inspection as commonly required by a buyer or lending institution, not as a universal inspection requirement.
    • Any such inspection must be conducted by a person licensed to inspect or evaluate onsite systems.
    “Individuals must be licensed by the Missouri Department of Health and Senior Services to perform private assessments of existing systems for real estate transactions.”
  • Off-grid sanitationLimited

    Onsite wastewater treatment used where public sewer is unavailable in portions of Adair County.

    • The county health department states that homes in portions of Adair County without public sewer rely on OWTS.
    • Permit, setback, effluent, contamination, nuisance, and installer-registration conditions apply as stated in the septic-permit claim.

    minimum setback from property line for permit-exempt system points: >= 10 feet

    “Homes in portions of Adair County that are without public sewer systems rely on onsite wastewater treatment systems (OWTS) to treat wastewater”
  • Driveway accessLimited

    New construction requiring an Adair County E-911 address.

    • The driveway and structure location must be marked before an address can be given if the request concerns new construction.
    • An address marker must be paid for in advance at a cost of $35.00 to the Adair County Treasurer.
    • The source describes the E-911 addressing prerequisite and does not establish a general driveway-construction permit requirement.

    address marker fee: 35 USD

    “Address marker must be paid in advance at a cost of $35.00 to the office of the Adair County Treasurer. Driveway and structure location must be marked before address can be given if this is new construction.”
    One more reviewed finding on this topic
    • Required — Obtaining an Adair County E-911 address for new construction.
      “Address marker must be paid in advance at a cost of $35.00 [...] Driveway and structure location must be marked before address can be given”
  • Building permitNot required

    Missouri's official county building code dataset shows Adair County has adopted no residential, commercial, or energy building code, and the county government lists no building/inspection department, so no county building permit is required in unincorporated areas. Corroborated by the state County Building Codes dataset (data.mo.gov iq7s-izvt, 2021): no county residential building code adopted.

    State of Missouri - County Building Codes dataset ↗Scouted from the county site, not yet independently re-checked

  • County-wide zoningAbsent

    Adair County's official government site lists no planning and zoning department, and it is a non-charter rural county with no county-wide zoning ordinance found.

    Adair County, Missouri (official) ↗Scouted from the county site, not yet independently re-checked

Missouri rules that apply here

  • Building code adoptedPartial

    Missouri statewide legal framework for building-code adoption by counties and other communities; the statutes authorize local adoption rather than establishing one uniformly adopted statewide building code.

    • County authority under RSMo 64.170 applies to counties of the first and second classification.
    • A county that had not adopted a building code before August 28, 2001 must obtain voter approval before adopting under RSMo 64.170 to 64.200.
    • The adoption vote is limited to voters in the affected area; a code affecting a county is not voted on by citizens of incorporated territory.
    • A county adopting under RSMo 64.180 must use a current nationally recognized building code edition from calendar year 1999 or later, as amended.
    • A county building ordinance may not conflict with liquefied petroleum gas installation requirements governed by RSMo 323.020.
    • A community may incorporate a code by reference only if it otherwise has legal power to adopt the ordinance.
    • A code incorporated by reference must be filed with the community clerk and available for public inspection for 90 days before adoption.
    • An ordinance adopting a code by reference must state the penalty separately rather than incorporate the penalty by reference.
    • RSMo 67.280 defines community to include any county, fire protection district, or municipality, and municipality to include an incorporated city, town, or village.
    “Because fire and building codes are adopted at the local level in Missouri”
    2 more reviewed findings on this topic
  • Zoning districtsPartial

    Missouri statutory authority for counties to create zoning districts in unincorporated territory; this does not establish or publish the actual zoning districts for any particular county.

    • The statute applies to unincorporated territory of counties subject to sections 64.211 to 64.295.
    • Actual district boundaries, regulations, and maps depend on county adoption and are not supplied by this statewide statute.
    • District regulations must be uniform for each class or kind of building or land use within each district, although regulations may differ between districts.
    • The regulations must be made in accordance with a comprehensive plan.
    “the unincorporated territory may be divided into districts of such number, shape and area as may be deemed best suited”
  • Who permits septicMixed (with conditions)

    Onsite wastewater treatment systems statewide in Missouri.

    • DHSS administers minimum standards and permits through DHSS, local contract authorities, or local authorities operating under ordinance.
    • County or city governments may adopt standards stricter than the state standard.
    • DNR regulates lagoons serving anything other than single-family residences, systems discharging to surface waters, systems treating flows greater than 3,000 gallons per day and dispersing through soil absorption systems, and industrial wastewater systems.
    • DNR approval is required for subdivisions, mobile home parks, and campgrounds when OWTS use is planned.

    domestic wastewater flow threshold: <= 3000 gallons per day (DNR regulates systems with flows greater than 3,000 gallons per day when wastewater is dispersed through soil treatment or absorption systems)

    “DHSS OWTS permitting falls under one of three authority types: DHSS Onsite Program, Local Authority (contract), or Local Authority via Ordinance. The application process varies by permitting authority.”
    2 more reviewed findings on this topic
    • State — Onsite wastewater treatment systems in Adair County under Missouri's statewide onsite sewage law and associated rules.
      “Agency: DHSS [...] Authority Type: DHSS [...] County: Adair”
    • Mixed — Missouri wastewater treatment systems, including domestic onsite systems, larger-flow systems, direct discharges, lagoons, subdivisions, and industrial wastewater.
      “In Missouri, different state and local agencies are responsible for regulating wastewater treatment systems.”
  • Septic permitLimited

    On-site wastewater treatment systems in Adair County, including systems serving single-family residences and other domestic wastewater systems within Missouri Department of Health and Senior Services jurisdiction.

    • Missouri DHSS is the permitting authority listed for Adair County; permit applications require an application number requested through the DHSS process.
    • A construction permit is required before installing or repairing most onsite wastewater treatment systems.
    • For Adair County, a permit is required when the property is smaller than three acres or is adjacent to a public utility lake or Corps of Engineers property.
    • A qualifying single-family residence lot of three acres or more may be excluded from the state onsite-sewage provisions.
    • A qualifying residential lot of ten acres or more may be excluded only when no single-family residence onsite sewage disposal system is within 360 feet of another onsite sewage disposal system and there is no more than one single-family residence per each ten acres in the aggregate.
    • The ten-acre exemption does not apply to lots adjacent to lakes operated by the Corps of Engineers or by a public utility.
    • For an exemption, all points of the system must be in excess of ten feet from every adjoining property line; no effluent may enter adjoining property, contaminate surface water or groundwater, or create a nuisance as determined by a readily available scientific method.
    • Regardless of whether a permit is required, anyone installing an onsite sewage disposal system must be registered with the Missouri Department of Health and Senior Services.
    • Effective August 28, 2026, application fees for onsite sewage disposal system construction, modifications, and repairs are temporarily suspended under the DHSS page's stated RSMo 701.046 update.
    • DHSS jurisdiction covers single-family residential systems and onsite or cluster systems treating domestic wastewater flows of 3,000 gallons per day or less through soil treatment or absorption systems.
    • The Missouri Department of Natural Resources regulates lagoons serving anything other than single-family residences, systems discharging to surface waters, systems with flows greater than 3,000 gallons per day dispersed through soil treatment or absorption systems, and industrial wastewater systems.
    • DNR approval is required for subdivisions, mobile home parks, and campgrounds if onsite wastewater treatment systems are planned.

    permit-required property size threshold: < 3 acres (Adair County Health Department states a permit is required for construction of an OWTS if the property is smaller than three acres.) · Corps/public-utility lake adjacency: true (A permit is required if the property is adjacent to a public utility lake or Corps of Engineers property.) · qualifying residential-lot exemption threshold: >= 10 acres (Requires no single-family residence OWTS within 360 feet of another OWTS and no more than one single-family residence per ten acres in the aggregate; unavailable for lots adjacent to Corps-operated or public-utility lakes.) · separation from adjoining property lines: > 10 feet (All points of an exempt system must be in excess of ten feet from adjoining property lines.) · nearby onsite system separation for ten-acre exemption: >= 360 feet (No single-family residence OWTS may be located within 360 feet of another OWTS.) · maximum domestic wastewater flow within DHSS jurisdiction: <= 3000 gallons per day (Greater flows and other listed wastewater categories fall under DNR.)

    “A permit is required for construction of an OWTS if the property is smaller than three acres, or if it is adjacent to a public utility lake or Corp of Engineers property.”
    5 more reviewed findings on this topic
    • Required — Construction of an onsite wastewater treatment system in Adair County when the property is smaller than three acres or adjacent to a public utility lake or Corps of Engineers property.
      “A permit is required for construction of an OWTS if the property is smaller than three acres, or if it is adjacent to a public utility lake or Corp of Engineers property. Due to the recent change in onsite program authority, to obtain a permit, you should now contact the Missouri Department of Health and Senior Services at 573-751-6095.”
    • Required — OWTS serving non-residential structures in Adair County, regardless of property size.
      “Regardless of the size of the property, a permit is necessary for all other onsite systems that serve non-residential structures.”
    • Required — Installing or repairing most onsite wastewater treatment systems in Missouri, including residential systems subject to state permitting.
      “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
    • Required — Installing or repairing most onsite wastewater treatment systems statewide in Missouri.
      “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
    • Required — Proposed campgrounds, mobile home parks, and subdivisions planning to use onsite wastewater treatment systems anywhere in Missouri.
      “DNR must approve subdivisions, mobile home parks and campgrounds if the use of OWTS is planned.”
  • Well permitLimited

    Construction or alteration of a public well serving a Missouri public water system.

    • Public water systems must receive written approval from the Missouri Department of Natural Resources Public Drinking Water Branch before constructing or altering a public well.
    • The requirement does not apply when the system meets the charitable-and-benevolent-organization exemptions in section 640.116, RSMo.
    • Anyone proposing to install a public well must contact the department’s regional office for a well-site survey.
    • The survey addresses minimum isolation or setback distances from known or potential contaminant sources, including septic tanks, sanitary sewer lines, and landfills.
    • Before applying for construction authorization, the public water system must obtain an estimated casing-depth letter from the Missouri Geological Survey Water Resources Center.
    • There is no fee for the well-site-survey and estimated-casing-depth-letter services.
    • Failure to obtain construction authorization may result in approval delays and possibly require the owner to properly plug the well and drill a new one according to 10 CSR 60-3.

    public water system threshold: at least 15 service connections or regularly serves an average of at least 25 individuals daily, at least 60 days per calendar year

    “Public water systems must receive written approval from the PDWB before constructing or altering a public well”
    3 more reviewed findings on this topic
    • Limited — Water-well construction, repair, pump installation, and contracted well work in Adair County under Missouri's statewide well-construction rules.
      “Landowners may install their own well or pump without a permit pursuant to the above mentioned law and rules.”
    • Required — A person or contractor conducting regulated work to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a water well, heat-pump well, monitoring well, or related well in Missouri.
      “A non-restricted permit is required to drill, construct, repair, reconstruct, plug, or install pumps or pumping equipment in a well.”
    • Limited — Construction or repair of water wells, installation or replacement of pumps, and associated plumbing and electrical work in Missouri.
      “A non-restricted water well installation permit is required to construct or repair a water well in Missouri.”
  • Agricultural exemptionAvailable (with conditions)

    Farm buildings and farm structures used for agricultural purposes under the county building and land-use restriction provisions of RSMo sections 64.800 to 64.905.

    • The exemption does not apply within incorporated portions of counties.
    • The exemption applies to raising crops, livestock, orchards, or forestry and to specified rice-farming or flood-irrigation impoundments.
    • For farm buildings or farm structures, the area must not be within the area shown on the flood hazard area map.
    • The statute preserves the validity of county ordinances or orders adopted before March 4, 1991.
    • Other laws and local requirements may still apply.

    rice-farming or flood-irrigation berm height: <= 18 inches (small berms placed around a field to hold water for growing rice or flood irrigation)

    “This section shall not apply to the erection, maintenance, repair, alteration or extension of farm buildings or farm structures used for such purposes in an area not within the area shown on the flood hazard area map.”
    6 more reviewed findings on this topic
    • Available (with conditions) — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures in Adair County insofar as county fire-protection or fire-prevention ordinances are concerned.
      “Notwithstanding any provision of law to the contrary, no fire protection or fire prevention ordinance adopted by any county in this state shall be exercised so as to impose regulations or to require permits with respect to the erection, maintenance, repair, alteration, or extension of farm buildings or farm structures.”
    • Conditional — Raising crops, livestock, orchards, or forestry, and erection, maintenance, repair, alteration, or extension of farm buildings or farm structures in counties subject to Missouri Revised Statutes § 64.620, including unincorporated areas, when the statutory conditions are met.
      “The provisions of this section shall not apply to the incorporated portions of the counties, or to the raising of crops, livestock, orchards, or forestry, or to seasonal or temporary impoundments used for rice farming or flood irrigation. [...] This section shall not apply to the erection, maintenance, repair, alteration or extension of farm buildings or farm structures used for such purposes in an area not within the area shown on the flood hazard area map.”
    • Available (with conditions) — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures as against county fire-protection or fire-prevention ordinances.
      “Notwithstanding any provision of law to the contrary, no fire protection or fire prevention ordinance adopted by any county in this state shall be exercised so as to impose regulations or to require permits with respect to the erection, maintenance, repair, alteration, or extension of farm buildings or farm structures.”
    • Available (with conditions) — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures used for agricultural purposes under RSMo section 64.890, outside incorporated portions of counties and outside areas shown on flood hazard area maps.
      “This section shall not apply to the erection, maintenance, repair, alteration or extension of farm buildings or farm structures used for such purposes [...]”
    • Available (with conditions) — Farm buildings and farm structures statewide, with respect to county fire-protection and fire-prevention ordinances.
      “no fire protection or fire prevention ordinance adopted by any county in this state shall be exercised so as to impose regulations or to require permits [...]”
    • Available — Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures with respect to county fire-protection or fire-prevention ordinances.
      “Notwithstanding any provision of law to the contrary, no fire protection or fire prevention ordinance adopted by any county in this state shall be exercised so as to impose regulations or to require permits with respect to the erection, maintenance, repair, alteration, or extension of farm buildings or farm structures.”
  • Subdividing landLimited

    Subdivision plats in the unincorporated areas of counties covered by RSMo section 64.070 after the county commission adopts subdivision regulations.

    • The county commission must first adopt subdivision regulations.
    • The plat must first be submitted to the planning commission.
    • If the county planning commission does not report upon the plat within thirty days, it may then be deemed approved.
    • If amended or rejected by the planning commission, the action may be overruled and the plat approved only by the county commission, with the reasons for overruling spread upon the county commission minutes.
    • The recorder of deeds may not record the plat until receiving a certificate of authority from the county zoning enforcement officer.
    • The statute also permits a county planning commission, upon written request of an incorporated area's legislative body where there is no municipal planning commission, to pass upon subdivision plats within that incorporated area; those plats are subject to county planning commission rules and approval procedures.

    planning commission reporting period: 30 days (If no report is made, the plat may then be deemed approved.)

    “After the county commission shall have adopted such subdivision regulations, no plat of a subdivision of land within the unincorporated area of such county [...]”
    One more reviewed finding on this topic
    • Limited — Subdivision regulations adopted by Missouri cities, towns, or villages under RSMo section 89.410.
      “The planning commission shall recommend and the council may by ordinance adopt regulations governing the subdivision of land within its jurisdiction.”
  • Building in a floodplainLimited

    Projects including mining, dredging, building construction, and other dirt-moving activities in designated flood hazard areas within participating Missouri jurisdictions.

    • The source describes local county or city flood damage reduction ordinances rather than one uniform statewide ordinance.
    • The project must be within a participating jurisdiction.
    • The project must be within a designated flood hazard area.
    • The cited rule does not apply if either condition is absent.
    • Covered projects must not raise flood heights.
    “Some jurisdictions (for example, county, city) require any projects in certain floodplains do not raise flood heights.”
    2 more reviewed findings on this topic
    • Required — Development in a floodplain in unincorporated Adair County, subject to the applicable community floodplain process.
      “Regardless, some type of permit MUST be issued for ALL development in the floodplain. An Engineering “No-Rise” Certificate is required for all proposed development in the regulatory floodway, and must be obtained by the community before the floodplain development permit may be issued.”
    • Required — All development in a Missouri floodplain, administered through the applicable community floodplain permitting process.
      “Regardless, some type of permit MUST be issued for ALL development in the floodplain.”
  • Permit feesPublished (with conditions)

    Missouri Department of Natural Resources air construction permits statewide.

    • Fees apply to air construction permits, not to every Missouri building or land-use permit.
    • Construction permit fees include a filing fee and an hourly processing fee.
    • The filing fee depends on the type of construction permit.
    • The listed fees are effective January 1, 2026.
    • Fees applicable until December 31, 2025 are available on the Air Construction Permit Fees white sheet.
    • A convenience fee is charged for electronic payment.

    portable source relocation filing fee: 300 USD · minor permit filing fee: 300 USD · minor permit processing fee: per 100 USD (hour) · general permit filing fee: 700 USD · new source review filing fee: 6000 USD (plus $100 per hour processing fee) · prevention of significant deterioration filing fee: 6000 USD (plus $100 per hour processing fee) · hazardous air pollutant filing fee: 6000 USD (plus $100 per hour processing fee) · temporary or pilot filing fee: 250 USD (plus $100 per hour processing fee)

    “Construction permit fees include a filing fee and an hourly processing fee. The filing fee is dependent on the type of construction permit.”
    2 more reviewed findings on this topic
    • Published (with conditions) — Missouri construction land-disturbance stormwater general permits applicable to qualifying projects in Adair County.
      “Permit Fees Acreage Disturbed | Permit Fee 1 - < 5 acres | $500 5 - < 10 acres | $600 10 - 25 acres | $750 25 - < 100 acres | $1,500 100 - < 500 acres | $3,000 500 acres + | $5,000”
    • Published (with conditions) — Missouri onsite wastewater treatment system construction, modification, and repair application fees administered under the statewide DHSS OWTS program.
      “Effective August 28, 2026, [...] the application fees associated with on-site sewage disposal system construction, modifications, and repairs will be temporarily suspended.”
  • Permit processPublished (with conditions)

    Construction land-disturbance activities in unincorporated Adair County that disturb one or more acres, or less than one acre when part of a larger common plan of development or sale reaching one cumulative acre.

    • The permit is a Missouri Land Disturbance Stormwater General Operating Permit obtained through the MoDNR ePermitting system.
    • The main requirement is a stormwater pollution prevention plan with site-specific best management practices.
    • The current permit expires February 7, 2027; projects continuing after that date require a new permit on or after February 8, 2027, effective for five years, with another fee.
    • Permit fees are $500 for 1 to under 5 acres, $600 for 5 to under 10 acres, $750 for 10 to 25 acres, $1,500 for 25 to under 100 acres, $3,000 for 100 to under 500 acres, and $5,000 for 500 acres or more.

    land disturbance threshold: >= 1 acre (Less than one acre also requires a permit when part of a larger common plan of development or sale reaching one cumulative acre.) · permit fee, 1 to under 5 acres: 500 USD · permit fee, 5 to under 10 acres: 600 USD · permit fee, 10 to 25 acres: 750 USD · permit fee, 25 to under 100 acres: 1500 USD · permit fee, 100 to under 500 acres: 3000 USD · permit fee, 500 acres or more: 5000 USD

    “Land disturbance permits are required for construction disturbance activities of one or more acres or construction activities that disturb less than one acre when part of a larger common plan of development or sale that will disturb a cumulative total of one or more acres over the life of the project.”
    2 more reviewed findings on this topic
    • Published (with conditions) — Permit applications for work on Missouri Department of Transportation right-of-way statewide.
      “Contact the Traffic Specialist a minimum of 48 hours prior to beginning work and for all necessary inspections.”
    • Published (with conditions) — Installation or repair of most onsite wastewater treatment systems in Missouri.
      “A construction permit is required before installing or repairing most onsite wastewater treatment systems (OWTS). Some single family residential lots may be exempt from permitting.”
  • county zoning authorityLimited

    Missouri county zoning authority over unincorporated land.

    • RSMo § 64.850 applies to counties of the first class without a charter and counties of the second, third, or fourth class.
    • RSMo § 64.620 applies to counties of the second or third class to which §§ 64.510–64.690 apply.
    • Adoption under §§ 64.510–64.690 requires approval by vote of the people under § 64.530.
    • The authority applies in unincorporated portions and not incorporated portions.
    • The regulations must be in accordance with a comprehensive plan.
    • Under § 64.090, the zoning power does not apply to raising crops, livestock, orchards, or forestry; seasonal or temporary rice-farming or flood-irrigation impoundments; specified farm structures outside mapped flood-hazard areas; or underground mining entered through shafts outside mapped flood-hazard areas.
    • Existing lawful uses and specified public-utility services are protected under the cited statutory schemes.
    “the county commission of any county of the first class not having a charter form of government, or of any county of the second, third or fourth class may, after approval by vote of the people as provided in section 64.845, regulate and restrict, by order of record, in the unincorporated portions of the county, the height, number of stories, and size of buildings, the percentage of lots that may be occupied, the size of yards, courts and other open spaces, the density of population, the location and use of buildings, structures and land for trade, industry, residence or other purposes.”
    2 more reviewed findings on this topic
  • county building authorityLimited

    County authority to regulate residential construction and issue building permits in unincorporated areas of Missouri.

    • The authority under sections 64.170 to 64.200 applies to counties of the first and second classification.
    • A county that had not adopted a building code before August 28, 2001, must obtain voter approval before adopting one under those sections.
    • Only voters in the area affected by the proposed code may vote; incorporated-territory citizens cannot vote on a code affecting a county.
    • The county commission must hold at least three public hearings and provide the statutory newspaper publication and county posting notices before adoption.
    • Regulations adopted under section 64.180 apply to unincorporated territory, except as otherwise provided.
    • Adopted or amended codes after August 28, 2001, must use a current, calendar year 1999 or later edition of a nationally recognized building code, as amended.
    • A county building ordinance may not conflict with liquefied petroleum gas installations governed by section 323.020.

    public hearings before adoption: >= 3 hearings minimum (Section 64.180(3)) · newspaper notice: >= 15 days (Notice of hearing time and place must be published in at least two newspapers having general circulation within the county) · posted notice: >= 15 days (Notice must be posted in four conspicuous places in the county) · minimum nationally recognized building-code edition: >= calendar year 1999 edition year (Applies after August 28, 2001, under section 64.180)

    “The regulations adopted shall be applicable to the unincorporated territory of the county, except as otherwise provided herein”
    2 more reviewed findings on this topic
    • Limited — County regulation of construction and issuance of building permits for buildings, including residential construction, in Missouri counties, with the practical focus on county-controlled areas outside incorporated territory.
      “the county commission in all counties of the first and second classification [...] is for this purpose empowered [...] to adopt [...] regulations to control the construction”
    • Limited — Missouri counties' authority to require permits and regulate residential construction in unincorporated areas.
      “Before the adoption of such code of regulations, the county commission shall hold at least three public hearings thereon”

Inside cities and towns in Adair County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Building code adoptedAdopted (with conditions)

    Construction within the City of Kirksville, Adair County, Missouri.

    • The City states that its adopted codes apply to construction practice.
    • The cited page states that the 2021 International Code version became operative on March 21, 2022.
    • The City also adopted the 2020 National Electrical Code as its standalone electrical code.

    building code edition: 2021 International Code Council codes · electrical code edition: 2020 National Electrical Code · effective date stated by source: 2022-03-21

    “The City of Kirksville has adopted the following codes to be used for construction practice:”
  • Local zoningPresent (with conditions)

    Parcels within the City of Kirksville, Adair County, Missouri.

    • Rezoning requires submission of the listed documents and an application fee.
    • Adjacent landowners within 185 feet must be notified for a rezoning hearing.
    • The City Planner publishes notice at least 15 days before the public hearing.
    • The Planning and Zoning Commission makes a recommendation to the City Council for final decision.
    • Where allowed by Municipal Code, a Special Use Permit may be allowed.

    adjacent-owner notice distance: 185 feet · public notice lead time: >= 15 days

    “The City Planner and the Applicant(s) will work together to present the rezoning request to the Planning and Zoning Commission. The Planning and Zoning Commission will decide on a recommendation to be given to the City Council at their next regularly scheduled City Council Meeting for their final decision.”
    3 more reviewed findings on this topic
    • Present (with conditions) — Property rezoning and special-use permitting within the City of Kirksville, Adair County, Missouri.
      “To rezone any parcel of land within the City of Kirksville, the applicant must submit the following documents to the City Planner:”
    • Present (with conditions) — Parcels within the City of Kirksville, Adair County, Missouri.
      “To rezone any parcel of land within the City of Kirksville, the applicant must submit the following documents to the City Planner:”
    • Present (with conditions) — Parcels within the City of Kirksville, an incorporated municipality in Adair County.
      “To rezone any parcel of land within the City of Kirksville, the applicant must submit the following documents to the City Planner:”
  • Zoning districtsPublished (with conditions)

    Zoning districts and zoning maps within the City of Kirksville, Adair County, Missouri.

    • The City identifies Chapter 44 as its zoning ordinance and provides both interactive GIS and PDF zoning maps.
    • This municipal zoning information does not establish zoning rules for unincorporated Adair County or other municipalities.
    “City of Kirksville Zoning Ordinance (Chapter 44) [...] Zoning Map (Interactive GIS) [...] Zoning Map (pdf)”
  • Short-term rentalsLimited

    The Airbnb short-term rental approved for 2701 Sunset Cove Drive in Kirksville, Missouri.

    • A special use permit is required for the approved use.
    • Temporary rental of the entire property is prohibited.
    • The current property owner must remain on the premises overnight while guests occupy rooms.
    • Meals may not be provided or sold to guests; only permitted prepackaged foods may be provided.
    • Receptions, parties, weddings, or similar activities are prohibited.
    “That a Special Use Permit is hereby issued [...] Temporary rental of the entire property shall be prohibited.”
  • Permit feesPublished (with conditions)

    One- and two-family dwelling building permits within the City of Kirksville, Adair County, Missouri.

    • The published schedule is effective March 23, 2026.
    • The fee is based on construction cost using International Code Council National Average Calculations.

    minimum building permit fee: 25 USD · building permit fee: per 4.25 USD per $1,000 of construction cost (Construction cost based on International Code Council National Average Calculations)

    “Effective 03/23/2026 [...] Building Permits: Minimum Cost $25.00 Plus $4.25 / $1,000 of construction cost based on International Code Council National Average Calculations”
  • Permit processPublished (with conditions)

    New structures, additions, decks, and pre-built structures placed within Kirksville city limits.

    • The application requires the location address, property type, work type, owner and contractor information, and total project cost.
    • New buildings or structures additionally require use, size and height, dwelling-unit count, square footage, a site plan, setbacks, drainage/topographical information, and in specified cases signed and sealed engineering or architectural plans.
    “A building permit is required whenever a party wishes to build a new structure, add to an existing structure, build a deck”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Owner-builder exemption — Whether an owner-builder may obtain or perform permitted building work personally in Adair County, and any applicable owner-occupancy, contractor, inspection, licensing, or project-limit conditions.
  • Inspections — Whether Adair County requires building inspections for construction, alteration, repair, or occupancy of buildings in the county.
  • Certificate of occupancy — Whether Adair County requires a certificate of occupancy before occupying a newly constructed, altered, converted, or substantially repaired building.
  • Minimum dwelling size — Minimum dwelling size for residential development in unincorporated Adair County.
  • Minimum lot size — Minimum lot size for land development in unincorporated Adair County.
9 more unanswered
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Mandatory utility hookup

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.

Living off-grid in Adair County, Missouri

Is Adair County a good place to live off-grid or homestead?

Adair County scores 79/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost.

Do you need a building permit in Adair County, Missouri?

Adair County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Missouri Department of Health and Senior Services (DHSS). These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Adair County, Missouri?

Land in Adair County runs about $4,098 per acre, based on the latest county data.

What is the water situation in Adair County?

Adair County gets about 40.7" of rain a year, with severe drought in roughly 7.6% of years.

How remote is Adair County?

A representative private-land location has about 26,006 people within a 30-minute drive and 576,171 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Adair compares in Missouri

Compare side-by-side →See all 115 Missouri counties ranked →