We could not confirm a universal building-permit requirement for unincorporated Mississippi County, Arkansas, although Arkansas building-code minimums apply even where no permit or inspection is required12. We also could not confirm whether unincorporated Mississippi County has a zoning ordinance3. Septic systems are administered under Arkansas Department of Health rules through the local county health unit4.
At a glance
- Building permit
- A county building-permit requirement was not confirmed; ask the County Judge's Office1
- Building code
- Arkansas building-code minimums apply even where permits or inspections are not required2
- Zoning
- A county zoning ordinance was not confirmed3
- Septic
- Administered under Arkansas Department of Health rules through the local health unit4
- RV or tiny-home living
- Not confirmed for a single private parcel; state park rules apply to paid parks with 3 or more spaces56
- Owner-builder
- State contractor-license exemption for an owner building no more than 1 residence in a calendar year7
- Floodplain development
- County permit review is required in a Special Flood Hazard Area8
- Private well permit
- A general requirement for a private domestic well was not confirmed9
Who to call
Septic permits
Mississippi County Local Health Unit - Blytheville
Arkansas Department of Health local health unit serving Mississippi County; ask for the Onsite Environmental Specialist for septic applications and records
1299 N 10th St, Blytheville, AR 72315
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 Mississippi County, Arkansas?
A universal county building-permit requirement was not confirmed for construction in unincorporated Mississippi County, so ask the County Judge's Office before beginning work1. Arkansas's statewide source says state building-code requirements apply even in areas where no permit or inspections are required2. New structures and covered alterations, additions, changes in use and structural changes must therefore meet the Arkansas Fire Prevention Code's building or residential standards, and a city or other authority may administer its own requirements where it has jurisdiction10. Mississippi County building inspections and certificates of occupancy remain unconfirmed, because the statewide sources acknowledge places without inspections and do not identify a local inspection authority for this county11. An owner building the owner's own residence may use Arkansas's contractor-license exemption so long as the owner does not build more than 1 residence during the calendar year, but that exemption does not waive applicable code, septic, floodplain or municipal requirements7.
Who handles permits in Mississippi County, and how do you reach them?
A Mississippi County building or inspection office responsible for unincorporated construction was not confirmed, so start with the County Judge's Office for parcel-specific building, planning and zoning questions13. Septic questions go to the Arkansas Department of Health's Mississippi County Local Health Unit in Blytheville at 1299 N 10th St, Blytheville, AR 72315, (870) 763-706412. Ask that health unit for the Onsite Environmental Specialist because Arkansas routes onsite-wastewater work through the local county health unit4. Development in a Special Flood Hazard Area is different from ordinary county construction: Mississippi County's floodplain administrator reviews development-permit applications and plans for work in those mapped areas8. We could not confirm a current floodplain-office contact, so ask the County Judge's Office to route you to the floodplain administrator before development in a mapped hazard area8.
Does Mississippi County have zoning?
We could not confirm whether unincorporated Mississippi County has a zoning ordinance3. Countywide zoning, setbacks, minimum lot size, minimum dwelling size, lot coverage and building-height limits therefore remain unconfirmed3. Ask the Mississippi County Judge's Office about the specific parcel and proposed use before relying on an assumption that rural land is unrestricted3. A parcel inside an incorporated municipality may face that municipality's rules, so ask the city directly when a tract is inside city limits3. State rules also continue to matter where county zoning is uncertain: a nonresidential farm building is exempt from the Arkansas Electrical Code Authority Act's requirements, but that exemption does not establish an exemption from any other applicable approval13. A subdivision boundary survey creating parcels must be filed with the State Surveyor after any city or county recording requirements are satisfied14.
How do septic permits work in Mississippi County?
Mississippi County septic and onsite-wastewater applications are administered under Arkansas Department of Health rules through the local county health unit's Onsite Environmental Specialist4. State rules direct applications to the Arkansas Department of Health or its Authorized Agent, and applications go to the Department where no Authorized Agent has been designated15. Mississippi County soils deserve early attention because 0% of the county's mapped soils are rated free of severe limitations for a conventional septic drain field, so obtain the site evaluation before fixing the house location or system budget16. If a sanitary sewer is within 300 feet of where the sewer exits the building and connection is available without crossing another person's property, Arkansas requires the premises to connect to that sewer instead of using an onsite wastewater system17. Arkansas allows Department-authorized, laboratory-evaluated composting or incinerating toilets as components of an onsite wastewater system, but other wastewater still needs approved treatment or disposal and the system remains subject to onsite-wastewater requirements18.
Can you live in an RV or tiny home in Mississippi County?
We could not confirm a Mississippi County rule allowing or prohibiting long-term occupancy of a single RV or tiny home on a private parcel3. The Arkansas health rule for paid parks does not answer that single-parcel question: a parcel with 3 or more spaces for RVs, tiny houses on wheels or mobile homes, with placement or maintenance services provided for a fee, is regulated as a mobile-home or recreational-vehicle park5. Within that state park framework, a tiny house on wheels is treated as a mobile home when plumbed and inspected under the Arkansas Plumbing Code and as an RV when it is not19. Those paid-park rules do not establish a general authorization or prohibition for a single tiny house on wheels outside a qualifying park6. Ask the Mississippi County Judge's Office about county land-use rules and any nearby municipality about its jurisdiction before buying land for RV or tiny-home occupancy3.
Building a home in Mississippi County: the steps, in order
- Confirm that the parcel is in unincorporated Mississippi County, then ask the Mississippi County Judge's Office whether any parcel-specific permit, zoning, setback or inspection requirement applies; those local requirements remain unconfirmed13.
- Design the home to Arkansas's statewide building-code minimums even if the responsible authority says no permit is required2.
- Call the Mississippi County Local Health Unit and ask for the Onsite Environmental Specialist before siting the house, because 0% of mapped county soils are rated free of severe limitations for a conventional drain field1216.
- Check whether public sewer is available within 300 feet under the state's connection rule before paying for an onsite system design17.
- If the site is in a Special Flood Hazard Area, obtain county floodplain review before development8.
- If the driveway enters a state highway, obtain the Arkansas Department of Transportation access permit before work begins in the highway right-of-way20.
What should you check before buying land in Mississippi County?
Start with wastewater and drainage: 0% of Mississippi County's mapped soils are rated free of severe limitations for a conventional septic drain field, while the county receives about 52 inches of precipitation a year1621. Check the FEMA flood designation and contact the county before grading, building or placing even an accessory structure in a Special Flood Hazard Area, because the county requires floodplain-development review there8. Verify road access separately: a driveway onto an Arkansas state highway requires an ARDOT access permit before work begins, while a comprehensive county-road driveway rule was not confirmed20. Private domestic-well permitting was not confirmed; the available state approval rule is limited to public and semi-public water-system wells9. For carrying costs, Mississippi County's effective property-tax rate is about 0.6%, with a median annual property-tax bill of about $6462223. Finally, obtain written answers for zoning, RV occupancy, tiny-home occupancy and setbacks from the county or applicable city before closing, because those local rules remain unconfirmed3.
Watch-outs
- A Mississippi County building-permit requirement and inspection authority were not confirmed, but Arkansas building-code standards still apply even where no permit or inspection is required12.
- County zoning, setbacks, minimum lot size and minimum dwelling size were not confirmed; ask the Mississippi County Judge's Office about the parcel3.
- A Special Flood Hazard Area triggers county floodplain-development review even for minor work such as fences, accessory structures and grading8.
- A state highway driveway needs an ARDOT access permit before work begins in the right-of-way20.
Sources
- Home Improvement Contractor License Application (2026 county census)
- Home Improvement Contractor License Application (Arkansas statewide rule), quoted and re-checked
- (2026 county census)
- Arkansas Department of Health - Onsite Wastewater FAQs (2026 county census)
- 20 CAR § 138-102. Compliance (Arkansas statewide rule), quoted and re-checked
- 20 CAR § 138-102. Compliance (Arkansas statewide rule), quoted and re-checked
- Arkansas Residential Contractors Committee Rules and Statutes (Arkansas statewide rule), quoted and re-checked
- Mississippi County OEM/911 Director Position Description, quoted and re-checked
- 17 CAR § 11-607. Public and semi-public wells (Arkansas statewide rule), quoted and re-checked
- 2021 Arkansas Fire Prevention Code (Arkansas statewide rule), quoted and re-checked
- Home Improvement Contractor License Application (Arkansas statewide rule), quoted and re-checked
- Mississippi County Local Health Unit - Blytheville (healthy.arkansas.gov)
- 17 CAR § 210-602. Construction and exemptions (Arkansas statewide rule), quoted and re-checked
- 15 CAR § 281-301. Publication of results (Arkansas statewide rule), quoted and re-checked
- Rules Pertaining to Onsite Wastewater Systems (2024), quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- 14 CAR § 21-301. Generally (Arkansas statewide rule), quoted and re-checked
- Rules Pertaining to Onsite Wastewater Systems (2024) (Arkansas statewide rule), quoted and re-checked
- 20 CAR § 138-101. Definitions (Arkansas statewide rule), quoted and re-checked
- Regulations: Rules for Access Driveways to State Highways (Arkansas statewide rule), quoted and re-checked
- Annual precipitation: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: 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.