Unincorporated Pemiscot County, Missouri does not require a county building permit for an ordinary home, cabin or shop, and no countywide zoning is reported12. Septic is separate: Missouri DHSS is the listed Pemiscot County permitting authority for most onsite wastewater work3. Development in a floodplain still needs a floodplain permit through the county45.
At a glance
- Building permit
- Not required by the county in unincorporated Pemiscot County1
- Zoning
- No countywide zoning reported for unincorporated land; city rules can differ26
- Septic permits
- Missouri DHSS is the listed authority for Pemiscot County3
- Floodplain work
- A county floodplain permit is required for development in a floodplain45
- RV living
- Long-term occupancy on unincorporated land is unconfirmed; Caruthersville separately limits RV parking7
- Well work
- A landowner may install a personal well or pump without a permit, while contractors need the applicable permit8
- Septic soils
- Only 0.6% of soils lack severe limits for a conventional drain field9
Who to call
Septic permits
Missouri Department of Health and Senior Services, Onsite Wastewater Treatment Program
Onsite wastewater construction permits for Pemiscot County
930 Wildwood Dr. Jefferson City, MO 65102
Roads & driveways
Pemiscot County Road & Bridges
Questions about county roads and bridges
2334 E. Washington, Hayti, MO 63851
Contact details are copied from each office’s official page and were checked against it on September 28, 2026.
Do you need a building permit in Pemiscot County, Missouri?
No county building permit is required for an ordinary home, cabin, barn or shop in unincorporated Pemiscot County, which reports no adopted building or energy code and no county building department1. Missouri does not impose one uniform statewide building code; fire and building codes are adopted locally, and the statutory county program carries adoption conditions10. The answer changes inside an incorporated city, where municipal requirements may apply independently of the county10. A farm structure also has a narrow statewide protection from county fire-protection or fire-prevention permit rules, but that protection is not a blanket exemption from floodplain, septic, zoning or other land-use requirements11.
Who is the Pemiscot County building department, and who issues permits?
Pemiscot County has no county building department or ordinary county building-permit review for unincorporated construction1. The permit offices depend on the work: Missouri DHSS handles Pemiscot County onsite wastewater permits, and its county listing directs applicants to request an application number online123. The Pemiscot County Floodplain Administrator handles county floodplain permits and asks callers to have the property-owner name, parcel number, available elevation information and physical emergency-services address ready4. Pemiscot County Road & Bridges is the county contact for questions about county roads and bridges13. A driveway or other work inside Missouri Department of Transportation right-of-way requires a separate MoDOT permit14.
Does Pemiscot County have zoning?
No countywide zoning is reported in unincorporated Pemiscot County, but the basis is the absence of a planning or zoning department on the county site rather than a published county ordinance expressly saying that no zoning exists2. Parcel-specific setbacks, minimum lot size, building height and minimum dwelling size therefore could not be confirmed; ask the County Clerk before relying on an assumed standard. Incorporated cities can regulate land separately: Portageville has a Planning and Zoning Commission that reviews zoning amendments, site plans and plats6. Hayti restricts trailer or mobile-home placement to an established mobile-home park, subject to its municipal chapter and lawful nonconforming-use provisions15. Those city rules do not apply automatically to unincorporated land615.
How do septic permits work in Pemiscot County?
Missouri DHSS is the listed onsite wastewater permitting authority for Pemiscot County, and most new installations and repairs need a construction permit before work begins316. Start by requesting an application number from the DHSS Onsite Wastewater Treatment Program12. Residential property under 3 acres requires a permit, while some larger single-family lots may qualify for statutory exemptions only if all applicable conditions are met; nonresidential systems need a permit regardless of acreage17. Permit application fees for onsite sewage construction, modification and repair are temporarily suspended effective August 28, 202616. Site conditions matter here because only 0.6% of Pemiscot County soils are rated without severe limitations for a conventional drain field, so arrange the soil and site evaluation before choosing a house location9.
Can you live in an RV or tiny home on your land in Pemiscot County?
Long-term RV occupancy, temporary camping and tiny-home occupancy on private land in unincorporated Pemiscot County could not be confirmed from an official county rule, so ask the county before treating the lack of countywide zoning as permission2. Wastewater still must go to a regulated sewer or compliant onsite system, subject to the statutory exceptions and applicable standards1819. Inside Caruthersville, no more than 1 camper trailer, motor home or other recreational vehicle may be parked on a residential lot, but that ordinance regulates parking and does not answer whether someone may live in the vehicle7. Tiny homes likewise have no confirmed countywide occupancy rule, and city zoning can differ, as Portageville's municipal planning and zoning process shows6.
Building a home in Pemiscot County: the steps, in order
- Confirm whether the parcel is unincorporated, because the county permit answer and municipal rules are not interchangeable16.
- Check the flood map early; floodplain development requires a permit, and the county asks for ownership, parcel, elevation and physical address information45.
- Arrange a septic site and soil evaluation, then request a DHSS application number before installing or repairing most systems12169.
- Decide on water: a landowner may install a personal well or pump without a permit, while someone contracting or directing that work needs the applicable restricted permit8.
- Ask Road & Bridges about county-road access, or obtain a MoDOT permit for work in state right-of-way1314.
- For unincorporated construction outside the floodplain, no ordinary county building permit is reported1.
What should you check before buying land in Pemiscot County?
Septic feasibility belongs near the top of due diligence because only 0.6% of county soils lack severe limitations for a conventional drain field9. Flood exposure also deserves parcel-level review because every development in a floodplain needs a permit, and development in a regulatory floodway needs an engineering no-rise certificate before that permit can issue5. Confirm whether access is from a county road or MoDOT right-of-way before planning a driveway1314. For carrying costs, the countywide effective property-tax rate is about 1%, the median annual property-tax bill is about $970, and the typical home value is about $92,033202122. Annual precipitation averages about 50.2 inches, but parcel drainage and a dependable water source still need direct evaluation23.
Watch-outs
- A blank county department listing is not the same as a published no-zoning ordinance, so confirm setbacks, lot size and dwelling rules for the parcel before designing around them2.
- Caruthersville, Portageville and Hayti have municipal rules that do not automatically describe unincorporated Pemiscot County7615.
- Floodplain development needs a county permit even though ordinary unincorporated construction does not go through a county building-permit review451.
Sources
- State of Missouri - County Building Codes for Missouri (2026 county census)
- Pemiscot County Government (2026 county census)
- OWTS Construction Permit Process, quoted and re-checked
- Pemiscot County Floodplain Administrator (pemiscotcounty.org)
- Floodplain Forms — Missouri State Emergency Management Agency, quoted and re-checked
- Planning & Zoning | City of Portageville, Missouri, quoted and re-checked
- City of Caruthersville Public Hearing and Ordinance No. 2014-08, quoted and re-checked
- Water Wells - PUB2945, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- RSMo Section 64.170 (Missouri statewide rule), quoted and re-checked
- RSMo Section 64.003 — Farm buildings and farm structures (Missouri statewide rule), quoted and re-checked
- Missouri Department of Health and Senior Services, Onsite Wastewater Treatment Program (health.mo.gov)
- Pemiscot County Road & Bridges (pemiscotcounty.org)
- Permits | Missouri Department of Transportation (Missouri statewide rule), quoted and re-checked
- Article III: Supplementary District Regulations, City of Hayti, Missouri, quoted and re-checked
- OWTS Construction Permit Process, quoted and re-checked
- Frequently Asked Questions, quoted and re-checked
- RSMo Section 701.031, quoted and re-checked
- RSMo Section 701.031, quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home value (Zillow): Bolthole Index county data
- Annual precipitation: Bolthole Index county data
Written September 28, 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.