Walthall County, Mississippi has no confirmed general building-permit office, application process or inspection program, and unincorporated land appears to be unzoned1. A local building permit may be required for modular-home installation2. The Town of Tylertown lists planning and zoning among its own services3, while septic permits for every address come from the Mississippi State Department of Health4,5.
Do you need a building permit in Walthall County, Mississippi?
Walthall County's general residential building-permit requirement, application process, fee schedule and inspection program could not be confirmed.
Walthall County's general residential building-permit requirement, application process, fee schedule and inspection program could not be confirmed. Mississippi required counties and municipalities to enact uniform building codes unless they opted out, but the statewide rule does not establish whether Walthall County opted out or which code edition applies6. A local government may require and charge for a building permit before installation of a modular home or modular-home component2. Where the modular-home inspection rule applies, local officials may inspect site preparation, foundations and structural, mechanical, plumbing and electrical connections outside the state factory-built standards2. Ask the Walthall County Board of Supervisors which building permit and code rules apply before construction7. An owner-builder working on that person's own residence is exempt from residential-builder licensing, not from building permits, codes, inspections, septic permits or local approval; the statute also limits an owner to one permit application, or one single residence, within one year8.
Who handles building permits in Walthall County?
No specialized Walthall County building department or building-permit office could be confirmed.
No specialized Walthall County building department or building-permit office could be confirmed. Start with the Walthall County Board of Supervisors at 200 Ball Ave., Tylertown, MS 39667, or call (601) 876-4947 during its published weekday hours7. Ask whether the county requires a building permit for the proposed structure, whether it adopted or opted out of the statewide code framework, who receives the building-permit application, what fees apply, and which inspections or occupancy approval are required6,7. For a modular home, specifically ask whether the county requires an installation building permit and inspects site preparation, foundations or outside connections2. For property inside Tylertown, ask the town whether it issues the building permit or zoning approval; the Mississippi State Department of Health still administers the septic permit1,4,5.
Does Walthall County have zoning?
Available county information indicates that unincorporated Walthall County is not zoned, but no official zoning ordinance, zoning map or explicit county no-zoning statement was confirmed.
Available county information indicates that unincorporated Walthall County is not zoned, but no official zoning ordinance, zoning map or explicit county no-zoning statement was confirmed1. The rules for setbacks, minimum lot size, minimum dwelling size, building height, lot coverage, accessory dwellings and short-term rentals also could not be confirmed. Ask the Walthall County Board of Supervisors about zoning approval for the parcel and proposed use, then review deeds, easements and subdivision covenants in the land records7. State health review of wastewater systems for subdivisions does not establish a general Walthall County subdivision or plat-approval ordinance10. The Town of Tylertown lists planning and zoning among the services it provides, but we could not confirm its ordinance, districts or approval procedures3. For property inside Tylertown, ask the town about municipal zoning approval and building permits; septic permits remain with the Mississippi State Department of Health1,4,5.
How do septic permits work in Walthall County?
The Mississippi State Department of Health administers individual on-site wastewater systems in Walthall County, and its permit is required to install one.
The Mississippi State Department of Health administers individual on-site wastewater systems in Walthall County, and its permit is required to install one4,5. Start with the Walthall County Health Department at 903 Union Road in Tylertown or 601-876-492411. A permanent water meter requires a permanent sewage-disposal solution, either sewer or septic; where public sewer is unavailable, apply to the health department for the required paperwork5. The residential application asks whether the applicant wants a department inspection, while financing, utilities or other authorities may separately require approval after installation12. The published Notice of Intent plus Final Approval fee is $197.50, subject to change and possible processing or other costs5. Only 19% of county soils are rated without severe limitations for a conventional drain field, so resolve the site and soil review early13.
Can you live in an RV or tiny home in Walthall County?
Walthall County's rules for long-term RV living and tiny-home occupancy could not be confirmed.
Walthall County's rules for long-term RV living and tiny-home occupancy could not be confirmed. The indication that unincorporated Walthall County lacks countywide zoning does not by itself establish permission to occupy either type of dwelling1. Ask the Walthall County Board of Supervisors about occupancy, temporary use, setbacks, floodplain review and any structure-specific approval before buying land for that plan7. Wastewater rules still apply: all wastewater must go to a central sewer or septic system, and gray water may not be discharged onto the ground, into a ditch or into a body of water5. A permanent water meter also depends on an approved permanent sewage-disposal solution5. If the project is part of an RV campground or subdivision, state health review for the commercial development may apply10.
Building a home in Walthall County: steps in order
Confirm whether the parcel is in unincorporated Walthall County or a municipality, then ask the Board of Supervisors what building-permit, building-code, inspection and occupancy rules apply.
- Confirm whether the parcel is in unincorporated Walthall County or a municipality, then ask the Board of Supervisors what building-permit, building-code, inspection and occupancy rules apply6,7.
- For a modular home, ask whether a local installation building permit and limited local inspections apply2.
- Contact the Walthall County Health Department, determine whether sewer is available and complete the septic-permit process before requesting a permanent water meter5,11.
- Plan every wastewater stream for sewer or septic; ground discharge of gray water is prohibited5.
- If the driveway connects to a state highway, obtain the required driveway permit for a new drive or alteration9.
- An owner-builder working on that person's own residence is exempt from residential-builder licensing, but not from building permits, codes, inspections, septic permits or local approval8.
What should you check before buying land in Walthall County?
Resolve wastewater feasibility before closing because only 19% of Walthall County soils are rated without severe limitations for a conventional drain field.
Resolve wastewater feasibility before closing because only 19% of Walthall County soils are rated without severe limitations for a conventional drain field13. If a sewer line is nearby, the applicant may be directed to connect and may need a rejection letter from the sewer provider before a septic application proceeds5. Confirm legal road access; a new or altered driveway onto a state highway requires a permit, while no county-road driveway requirement was established by the cited rule9. Ask the Board of Supervisors about building rules, floodplain administration, RV or tiny-home occupancy and parcel-specific land-use requirements7. Walthall County averages 63.2 inches of precipitation a year, so inspect drainage and usable building area13. About 65.8% of the county is wooded, making clearing and access costs parcel-specific13.
Watch-outs
- Walthall County's general building-permit process and code-adoption status remain unconfirmed; the modular-home rule does not establish a building-permit requirement for every home2,6.
- A permanent water meter requires an approved sewer or septic solution, and nearby sewer availability may affect whether a septic application can proceed5.
- Only 19% of Walthall County soils lack severe limitations for a conventional drain field, so resolve septic feasibility before choosing a house site13.
Sources
13 official pages, each quoted and re-checked · written October 9, 2026
- Walthall County Government (county office listing) (2026 county census)
- Mississippi Uniform Standards Code for Factory-Built Homes Law Regulations
- Town of Tylertown, Mississippi Audited Financial Statements for the Year Ended September 30, 2022
- On-Site Wastewater
- Wastewater Application Frequently Asked Questions
- Mississippi Uniform Building Codes
- Walthall County Board of Supervisors (walthallchamber.com)
- SB 2874 Summary
- Mississippi Department of Transportation Access Management Manual
- On-Site Wastewater
- Walthall County Health Department (msdh.ms.gov)
- On-Site Wastewater
- 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
Written October 9, 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.
Off-grid gear
Going off-grid in Walthall County means bringing your own water and power. The kit we’d start with:
- Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
- Power Bluetti Solar generators and home battery backup for living off the grid.
- Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
- Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.
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