Clark County, MO Building Permits, Zoning & Septic Rules

Clark County, Missouri has adopted no building code and no county building-permit ordinance, a finding corroborated by the state's own county building-code dataset¹. No countywide zoning ordinance turned up among the county's adopted ordinances either, though Missouri law lets counties adopt zoning by voter referendum, so this is a finding, not a legal certainty². Septic (onsite wastewater) permits go straight to the state: Missouri's Department of Health and Senior Services is the permitting authority for Clark County, not a county health office³⁴. Clark County does have a real floodplain ordinance, administered by the Presiding Commissioner, that governs development, RVs, and camping within mapped flood-hazard zones⁵⁶.

At a glance

Building permit: Not required; no county building code has been adopted¹
Zoning: No countywide zoning ordinance found; unincorporated status otherwise unconfirmed²
Septic (OWTS) permit: Required, permitted directly by the state DHSS Onsite Program rather than a county office⁴⁷
Water well: Landowners may install their own well or pump without a state permit⁸
Floodplain development permit: Required in FIRM-mapped flood zones, issued by the Presiding Commissioner⁶
RV or camping in a mapped flood zone: Under 180 consecutive days, or licensed and highway-ready, unless permitted as a manufactured home⁹
Property tax: About 1% effective rate; roughly $1,139 median annual bill¹⁰¹¹

Who to call

Floodplain permits

Clark County Presiding Commissioner's Office

The Presiding Commissioner is the county's designated Floodplain Administrator under the county's floodplain management ordinance and issues floodplain development permits

660-727-8241

[email protected]

111 E. Court Street, Ste 110, Kahoka, MO 63445-1268

Also useful

Clark County Clerk's Office

County records and general county-government contact; the office to ask about zoning, subdivision, or building questions the county site doesn't route to a named department

660-727-3283

[email protected]

111 E. Court Street, Ste 110, Kahoka, MO 63445-1268

Roads & driveways

Clark County Road & Bridge Department

County road and bridge maintenance and development; the office to ask about access to a county road

660-341-4016

Septic permits

Missouri DHSS Onsite Wastewater Treatment Program

State onsite wastewater treatment system (septic) permitting authority for Clark County; the state's own county lookup lists a dedicated Clark County contact line at (573) 751-6095 ext. 5

573-751-6095

PO Box 570, Jefferson City, MO 65102-0570

Contact details are copied from each office’s official page and were checked against it on September 24, 2026.

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

No. Clark County has adopted no building code and no building-permit ordinance, a finding the state's own County Building Codes dataset corroborates for Clark County¹. Missouri law lets only first- and second-class counties adopt building-permit regulations, and even then a county that hadn't adopted a code before August 28, 2001 needs voter approval to start¹². Missouri has no statewide residential building code that fills the gap, so unless Clark County has quietly changed course since this research, there's simply no county-level building-permit process to go through¹. That's true for a private home; it doesn't touch the floodplain permit that applies if your site sits in a mapped flood-hazard zone⁶.

Who handles floodplain, roads and general questions in Clark County?

There's no building department to call, but Clark County does administer its floodplain ordinance actively: the Presiding Commissioner, 111 E. Court Street, Ste 110, Kahoka, MO 63445-1268, phone 660-727-8241, is the county's designated Floodplain Administrator and issues floodplain development permits⁵⁶. For county road and bridge questions, the Road & Bridge Department at 660-341-4016 handles maintenance and development on county roads¹³. For anything else, including zoning or subdivision questions the county site doesn't route elsewhere, the Clark County Clerk's Office at 111 Court Street, Ste 110, Kahoka, MO 63445-1268, phone 660-727-3283, is the general county-government contact¹⁴.

Does Clark County have zoning?

No countywide zoning ordinance appears among Clark County's adopted ordinances, and only municipalities such as Kahoka administer their own zoning². That's not a legal limit the way it can be in some states: Missouri lets a first-class noncharter county, or a county of the second, third, or fourth class, establish county zoning any time voters approve it in a referendum, so Clark County could adopt zoning in the future even though it hasn't so far¹⁵. With derived_answers empty for this county, don't treat "no zoning ordinance found" as "no rule can ever apply"; confirm current status with the County Clerk's Office before you rely on it, especially for anything near Kahoka or another municipality¹⁴.

How do septic and well permits work in Clark County?

Septic, called an onsite wastewater treatment system (OWTS) in Missouri, is permitted directly by the state here rather than by a county health department: DHSS itself is listed as Clark County's OWTS permitting authority, with a dedicated Clark County contact line at (573) 751-6095 ext. 5³⁴. A construction permit is required before installing or repairing most OWTS statewide, though some single-family residential lots may be exempt, and the acreage-based exemption doesn't apply in every county, so confirm your specific situation with DHSS¹⁶. Soils are a real constraint here: 0% of Clark County's soils are rated without severe limits for a conventional septic drain field, so budget for an engineered or alternative system on essentially any site¹⁷. Missouri no longer requires a septic inspection at every real-estate transaction statewide, though a lender or buyer can request one from a licensed inspector, and some counties may still require it, so ask DHSS whether Clark County does¹⁸. Water wells are simpler: landowners may install their own well or pump without a permit under Missouri law, though anyone who contracts out that work needs a licensed, permitted well driller⁸.

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

It depends on whether your parcel sits in a mapped flood-hazard zone. Inside an unnumbered or numbered A zone or AE zone on Clark County's Flood Insurance Rate Map, the county's floodplain ordinance directly regulates RVs and temporary camping: the vehicle must be on-site fewer than 180 consecutive days, or be fully licensed and ready for highway use on its wheels with only quick-disconnect utilities, or meet the ordinance's manufactured-home permitting, elevation, and anchoring requirements⁹¹⁹. Outside a mapped flood zone, no county ordinance addressing RV or tiny-home occupancy was found, and Clark County's zoning status for that land is itself unconfirmed, so treat long-term RV or tiny-home living outside a flood zone as an open question rather than a settled yes². Either way, you'll still need an OWTS permit from DHSS if you're not on a public sewer⁴.

Building a home in Clark County: the steps, in order

Check whether your parcel falls within a mapped flood-hazard zone on Clark County's Flood Insurance Rate Map; if it does, you need a floodplain development permit from the Presiding Commissioner before any construction, including placement of a manufactured home⁵²⁰.
There's no county building permit to apply for anywhere in Clark County, since no building code has been adopted, but confirm current status with the County Clerk's Office if you want certainty¹⁴¹.
Contact the DHSS Onsite Wastewater Treatment Program, (573) 751-6095 ext. 5 for Clark County, before you install or repair a septic system⁴.
If you're drilling your own well as the landowner, you don't need a state well permit, but hiring a contractor to drill it does require a licensed, permitted well driller⁸.
If your driveway or any work will touch a Missouri Department of Transportation right-of-way, apply for a MoDOT permit and give the Traffic Specialist at least 48 hours' notice before work begins²¹.
If you're building a farm building or structure, know that Missouri law exempts farm buildings and structures from county fire-protection or fire-prevention ordinance permits, though that doesn't waive floodplain or septic rules²².

What to check before you buy land in Clark County

Clark County is rural, with about 13.2 people per square mile across roughly 6,641 residents, and the nearest metro area is about 98 miles away²³²⁴²⁵. Farmland runs about $4,859 an acre on average, and a typical home in the county is valued around $191,612²⁶²⁷. This is greener, wetter country than much of the rural Plains: annual precipitation averages about 39.2 inches, about 28.8% of the county is wooded, and only about 7.7% of years see severe drought²⁸²⁹³⁰. About 83.2% of the land sits at 15% slope or less, and 1.6% is federal land, worth checking if a parcel borders public ground³¹³². Septic siting is the county's biggest land-use constraint: 0% of local soils are rated without severe limits for a conventional drain field, so get a site evaluation before you commit to a specific lot, and check the Flood Insurance Rate Map before you buy near a creek or the Mississippi River bottoms¹⁷²⁰. Average annual temperature runs about 52.2°F, with only about 8.2 more days a year projected at or above 100°F by mid-century, mild by comparison with much of Texas or Oklahoma³³³⁴. Budget for insurance and taxes too: a typical homeowner's policy runs about $2,000 a year, the effective property tax rate is about 1%, and the median property tax bill is around $1,139 a year³⁵¹⁰¹¹.

Watch-outs

Missouri lets counties adopt zoning by voter referendum, so "no zoning ordinance found today" is a snapshot, not a permanent guarantee; check current status with the County Clerk's Office before you rely on it¹⁴¹⁵.
The county's RV and camping rules only apply inside mapped flood-hazard zones; outside those zones, no county ordinance on RV or tiny-home occupancy was found, so don't assume the 180-day flood-zone rule is the whole story⁹.
Every conventional septic drain field in Clark County faces severe soil limits by this county's own soil data; budget for an engineered or alternative system rather than assuming a standard field will pass¹⁷.

Sources

Written September 24, 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.

How Clark County scores

Seclusion73100% ev.

Self-Sufficiency55100% ev.

Admin Boringness8790% ev.

Durability47100% ev.

Property Autonomy47100% ev.

Carry Cost7996% 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 →

$192kTypical home

1%Property tax

$4,859Land / acre

39.2"Annual rain

7.7% of yrsSevere drought

8.2 / yr (+7.1)Mid-century 100°F days

16.2 daysMid-century dry spell

2.03" (+6.9%)Mid-century 1-day rain

1.81×Wildfire change factor

100%Forward climate coverage

$2,000Home insurance / yr

4.6% / yrInsurance growth

0.85%Nonrenewal rate

single ZIP shrunk to state medianInsurance basis

7,095People within 30 min

671,199People within 2 hr

10,962Radius comparison (15 mi)

13.2People / sq mi

1.6%Federal land

83.2%Land at 15% slope or less

0%Septic soil without severe limits

0 acWorkable land screen

28.8%Wooded land

32.6 tonsBiomass / forest ac

52.2°FAvg temp

Answers from the rulebook for Clark County

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

Clark County rules

Living in an RVLimited
Recreational vehicles placed on sites within unnumbered or numbered A zones and AE zones on Clark County's Flood Insurance Rate Map.
- The RV must be on the site for fewer than 180 consecutive days, or be fully licensed and ready for highway use, or meet the ordinance's permitting, elevation, and anchoring requirements for manufactured homes.
- A recreational vehicle is ready for highway use only if it is on its wheels or jacking system, attached to the site only by quick-disconnect utilities and security devices, and has no permanently attached additions.
maximum consecutive site duration: < 180 days (The alternative highway-use or manufactured-home requirements may apply instead.)
“be on the site for fewer than 180 consecutive days, or”
Ordinance No. 6 ↗Re-checked Sep 10, 2026
Camping on your landLimited
Temporary camping or temporary RV living quarters on sites within unnumbered or numbered A zones and AE zones on Clark County's Flood Insurance Rate Map.
- For an RV in the covered flood-hazard areas, the ordinance requires fewer than 180 consecutive days on site, full licensing and highway readiness, or compliance with manufactured-home permitting, elevation, and anchoring requirements.
- Highway-ready status requires the RV to remain on wheels or a jacking system, use only quick-disconnect utilities and security devices, and have no permanently attached additions.
maximum consecutive site duration: < 180 days (The alternative highway-use or manufactured-home requirements may apply instead.)
“temporary living quarters for recreational, camping, travel, or seasonal use.”
Ordinance No. 6 ↗Re-checked Sep 10, 2026
Building in a floodplainRequired
All development in Clark County, Missouri lands identified as unnumbered or numbered A zones and AE Zones on the FIRM dated January 19, 2000, as amended and future revisions.
- No development is permitted in covered areas except through a floodplain development permit.
- The ordinance requires compliance with additional Article 4 flood-hazard-reduction standards.
- Residential structures must generally have the lowest floor, including basement, elevated one foot above base flood elevation where base-flood-elevation data are provided.
- Agricultural structures and certain accessory structures have specific variance, non-habitation, design, size, and permit conditions.
- Recreational vehicles must either remain fewer than 180 consecutive days, be fully licensed and ready for highway use, or meet manufactured-home permitting, elevation, and anchoring requirements.
residential lowest-floor elevation: 1 foot above base flood elevation (Where base-flood-elevation data have been provided.) · development proposal threshold for base-flood-elevation data: greater than five (5) acres or fifty (50) lots, whichever is lesser (Subdivision proposals and other proposed new development in special flood hazard areas.) · recreational vehicle maximum stay without alternate compliance: < 180 consecutive days (Alternatively, the vehicle must be fully licensed and ready for highway use or meet manufactured-home requirements.)
“elevated to one (1) foot above base flood elevation.”
Floodplain Management Ordinance 6 ↗Re-checked Sep 10, 2026
Permit processPublished (with conditions)
Floodplain development in Clark County, Missouri special flood hazard areas identified as unnumbered or numbered A zones and AE Zones on the FIRM dated January 19, 2000, as amended and revised.
- A floodplain development permit is required before any construction or other development, including placement of manufactured homes.
- A separate permit is required for each structure or other development.
- The applicant must file a written application on a county-furnished form.
- The application must identify the land and proposed work, state the intended use or occupancy, provide assessed and fair-market values, identify existing base-flood elevation and proposed-development elevation, include any other information reasonably required by the Presiding Commissioner, include plans and specifications, and be signed by the permittee or authorized agent.
- The Presiding Commissioner is the Floodplain Administrator; the County Commission or its designated representative grants permits.
- All necessary prior federal, state, and local permits must be obtained where required.
FIRM effective reference date: January 19, 2000, as amended and any future revisions thereto · permit quantity: one separate permit for each structure or other development
“A floodplain development permit shall be required for all proposed construction or other development”
Floodplain Management Ordinance 6 ↗Re-checked Sep 10, 2026
Building permitNot required
Clark County is a non-charter rural county with no building code or building-permit ordinance among its adopted ordinances; Missouri has no statewide residential code. Corroborated by the state County Building Codes dataset (data.mo.gov iq7s-izvt, 2021): no county residential building code adopted.
Clark County, MO Ordinances ↗Scouted from the county site, not yet independently re-checked
County-wide zoningAbsent
No countywide zoning ordinance appears among Clark County's adopted ordinances; only municipalities such as Kahoka administer zoning.
Clark County, MO Ordinances ↗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”
RSMo Section 64.170 ↗Re-checked Sep 11, 2026
Who permits septicMixed
Missouri wastewater treatment systems, including domestic onsite systems, larger-flow systems, direct discharges, lagoons, subdivisions, and industrial wastewater.
- DNR regulates direct point-discharge or surface-land-application systems, non-individual lagoons, facilities exceeding 3,000 gallons per day, and industrial process waste.
- DHSS or a local agency, typically the county health department, regulates single-family subsurface onsite systems, individual single-family lagoons, and qualifying systems at or below 3,000 gallons per day.
- Local agencies may administer qualifying systems under local authority or ordinance.
domestic wastewater flow threshold: <= 3000 gallons per day (DNR regulates facilities with domestic wastewater flow greater than 3,000 gallons per day)
“In Missouri, different state and local agencies are responsible for regulating wastewater treatment systems.”
On-site Septic Systems and Subdivisions ↗Re-checked Sep 11, 2026
One more reviewed finding on this topic
- Mixed (with conditions) — Onsite wastewater treatment system permitting in Missouri, including Clark County where applicable state or local authority governs.
  “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. Work should not begin until a permit has been issued or an exemption to permitting has been confirmed by the appropriate permitting authority.”
  OWTS Construction Permit Process ↗Re-checked Sep 10, 2026
Septic permitRequired
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 OWTS.
- Some single-family residential lots may be exempt.
- For residential property less than three acres, a permit is required; the exemption does not apply in some counties, so the county authority must be checked.
- Work should not begin until a permit is issued or an exemption is confirmed.
- Effective August 28, 2026, application fees for onsite sewage disposal system construction, modifications, and repairs are temporarily suspended.
residential lot threshold: < 3 acres (The exemption does not apply in some counties.) · temporary permit-fee suspension effective date: 2026-08-28 (Applies to application fees associated with onsite sewage disposal system construction, modifications, and repairs.)
“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.”
OWTS Construction Permit Process ↗Re-checked Sep 11, 2026
Septic inspectionLimited
Inspection or evaluation of existing onsite wastewater systems in connection with Missouri real-estate transfers.
- Local public health agencies generally no longer inspect existing systems for real-estate transfers.
- A private licensed inspector may perform an inspection or evaluation.
- A lender, buyer, or other transaction participant may require an assessment.
- Some local standards may be more stringent than state regulations.
- Inspections and evaluations are distinct; an inspection includes a hydraulic test, while an evaluation does not.
“For the most part, local public health agencies no longer inspect existing systems related to real estate transfer. The help of a licensed inspector can be obtained to check the condition of the system.”
Onsite Wastewater Treatment System Inspections Versus Evaluations ↗Re-checked Sep 11, 2026
One more reviewed finding on this topic
- Not required — Inspection or evaluation of an onsite wastewater treatment system before a real-estate transaction in Missouri, including Clark County.
  “No. However, if a lender or buyer requests an inspection/evaluation, it must be conducted by a licensed individual. Some counties may require an onsite system inspection/evaluation for every real estate transaction. Check with the local permitting authority.”
  Frequently Asked Questions ↗Re-checked Sep 10, 2026
Off-grid sanitationLimited
Off-grid domestic wastewater treatment using onsite wastewater treatment systems where central sewer service is unavailable.
- Onsite systems treat and dispose of domestic sewage on the property where generated.
- A construction permit is generally required, including for residential property less than three acres, subject to county-specific exceptions.
- Wastewater may not be discharged into a road ditch or onto the ground.
- Local permitting authorities may impose additional requirements.
residential lot threshold: < 3 acres (The exemption does not apply in some counties.)
“Onsite wastewater treatment systems are sometimes referred to as "septic systems." These systems treat and dispose of domestic sewage on the property where it is generated.”
Frequently Asked Questions ↗Re-checked Sep 11, 2026
Well permitLimited
Construction, repair, and pump installation for water wells in Missouri, including Clark County.
- A non-restricted water-well installation permit is required to construct or repair a water well.
- A non-restricted pump-installation permit is required to install or replace a pump and to install or repair plumbing and electrical lines from the well to the structure entry point.
- A restricted water-well or pump-installation permit is required for a person who contracts for or directs these activities.
- Landowners may install their own well or pump without a permit under the cited law and rules.
“A non-restricted water well installation permit is required to construct or repair a water well in Missouri. A non-restricted pump installation permit is required to install or replace a pump in a water well. A non-restricted pump installation permit is also needed to install or repair the plumbing and electrical lines from the well to the point of entry in the structure. 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.”
Water Wells - PUB2945 ↗Re-checked Sep 10, 2026
Agricultural exemptionAvailable (with conditions)
Erection, maintenance, repair, alteration, or extension of farm buildings or farm structures as against county fire-protection or fire-prevention ordinances.
- The exemption applies to fire protection or fire prevention ordinances adopted by counties in Missouri.
- The statutory text addresses farm buildings and farm structures; it does not establish a general exemption from every zoning, building-code, floodplain, septic, or other land-use requirement.
- Effective August 28, 2025.
effective date: 2025-08-28
“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.”
RSMo Section 64.003 — Farm buildings and farm structures ↗Re-checked Sep 11, 2026
Driveway accessRequired
Construction or modification of driveways within MoDOT right-of-way statewide.
- A permit is required for construction of driveways and modifications to existing driveways on MoDOT right-of-way.
- An initial online request must be submitted for each planned listed activity.
- Engineered plans, traffic studies, hydraulic analysis, traffic-control plans, surety deposits, or performance bonds may be required depending on the work.
- The rule does not establish a permit requirement for driveways outside MoDOT right-of-way.
“We require you to obtain a permit to work on MoDOT's Right of Way for: Construction of driveways”
Permits | Missouri Department of Transportation ↗Re-checked Sep 11, 2026
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.”
Air Construction Permits ↗Re-checked Sep 11, 2026
county zoning authorityGeneral
Missouri counties adopting zoning regulations for unincorporated territory.
- First-class charter counties are empowered under RSMo § 64.090; that section excludes first-class counties without a charter form of government.
- A first-class noncharter county or a county of the second, third, or fourth class may establish county zoning under RSMo §§ 64.845 to 64.880 only after the zoning question is submitted to county voters and a majority of votes cast favors county zoning.
- The authority applies to unincorporated portions or territory and does not apply to incorporated portions under § 64.090.
- Section 64.090 excludes specified agricultural activities and certain farm structures, underground mining, and protects existing lawful uses subject to gradual elimination of nonconforming uses.
“If a majority of the votes cast is in favor of county zoning, the county commission shall proceed with a program of county zoning”
RSMo § 64.090 — Planning and zoning powers of county commission ↗Re-checked Sep 21, 2026
county building authorityLimited
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.
- RSMo § 64.170 grants the authority to counties of the first and second classification only.
- The authority is subject to subsections 2 and 3.
- A county that had not adopted a building code before August 28, 2001, under §§ 64.170 to 64.200, lacks authority to adopt one under those sections unless voters approve it.
- The building-code authority vote is limited to voters in the affected area; a code affecting a county may not be voted on by citizens of incorporated territory.
- The statute authorizes building regulations, building permits, inspections, licensing rules, and permit, license, and inspection fees.
“the county commission in all counties of the first and second classification [...] is for this purpose empowered [...] to adopt [...] regulations to control the construction”
RSMo § 64.170 — County commissions control construction and issue building permits ↗Re-checked Sep 21, 2026

Still unanswered

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

Owner-builder exemption — Owner-builder exemptions from residential building-permit, inspection, or contractor requirements in Clark County, Missouri
Inspections — Residential building inspections in Clark County, Missouri, including unincorporated areas
Certificate of occupancy — Certificates of occupancy for residential buildings in Clark County, Missouri, including unincorporated areas
Local zoning — Aggregate of municipal or other subordinate local zoning authorities within Clark County; the county itself is not treated as administering municipal ordinances.
Zoning districts — Published zoning districts applicable in Clark County, Missouri.

10 more unanswered

Minimum dwelling size
Minimum lot size
Setbacks
Lot coverage
Building height
Tiny homes
Accessory dwellings
Mandatory utility hookup
Subdividing land
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.

Living off-grid in Clark County, Missouri

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

Clark County scores 73/100 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 Clark County, Missouri?

Clark 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) - Onsite Wastewater Treatment Program. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Clark County, Missouri?

Land in Clark County runs about $4,859 per acre, based on the latest county data.

What is the water situation in Clark County?

Clark County gets about 39.2" of rain a year, with severe drought in roughly 7.7% of years.

How remote is Clark County?

A representative private-land location has about 7,095 people within a 30-minute drive and 671,199 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.

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

At a glance

Who to call

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

Who handles floodplain, roads and general questions in Clark County?

Does Clark County have zoning?

How do septic and well permits work in Clark County?

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

Building a home in Clark County: the steps, in order

What to check before you buy land in Clark County

Watch-outs

Sources

Clark County in Missouri

How Clark County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Clark County

Clark County rules

Missouri rules that apply here

Still unanswered

Living off-grid in Clark County, Missouri

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

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

How much does land cost in Clark County, Missouri?

What is the water situation in Clark County?

How remote is Clark County?

How Clark compares in Missouri