Winston County, Mississippi does not publish a building-permit office or process, so we could not confirm how residential permitting is handled in unincorporated areas1. The county department list also does not establish whether a county zoning ordinance applies2. Septic permits and site evaluations go through the Mississippi State Department of Health34.
At a glance
- Building permit
- County requirement and process not confirmed; ask the Board of Supervisors before construction15
- Zoning
- Countywide zoning status is not confirmed; municipalities may have separate rules2
- Septic permit
- Required through the Mississippi State Department of Health for an onsite system34
- RV living
- Private-land occupancy rules were not confirmed; ask the Board of Supervisors and the relevant municipality5
- Tiny homes
- No distinct county occupancy rule was confirmed; ask about the parcel and proposed sanitation56
- Wastewater
- Gray water cannot be discharged to the ground, a ditch or a body of water6
- Septic soils
- Only 5.2% of soils lack severe limits for a conventional drain field7
Who to call
Septic permits
Mississippi State Department of Health, Division of On-Site Wastewater
Individual onsite wastewater applications, site evaluations, inspections and private-well sampling for Winston County
570 East Woodrow Wilson Drive, Jackson, MS 39216
Building permits
Winston County Board of Supervisors
County ordinances and regulations, plus county roads and bridges; ask this office about unincorporated-area building and land-use requirements
P.O. Box 69, Louisville, Ms. 39339
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 Winston County, Mississippi?
Winston County does not publish a residential building-permit office, application or inspection process, so a permit requirement for a particular unincorporated parcel could not be confirmed1. Mississippi's statewide framework says counties and municipalities had to enact uniform building codes unless they opted out before November 30, 2014, but that framework does not establish Winston County's current code status8. Before ordering plans or starting site work, give the Winston County Board of Supervisors the parcel number, project type and intended use and ask whether a county permit, inspection or approval applies; the Board is the county body that adopts ordinances and regulations5. A project inside Louisville or another municipality needs a separate check with that city because a city rule does not answer what applies in unincorporated Winston County2.
Who handles building permits in Winston County?
No dedicated Winston County building or planning office could be confirmed from the county's published department information12. The practical local starting point is the Winston County Board of Supervisors, which adopts county ordinances and regulations and oversees county roads and bridges5. Ask the office to identify any permit authority, adopted building code, required inspections, floodplain contact and county-road driveway approval for the exact parcel. For wastewater, contact the Mississippi State Department of Health's Division of On-Site Wastewater; Winston County is listed in its North Region, and the division accepts applications and provides soil and site evaluations93. Keep written answers with the deed and construction records, especially if the county says no local building approval is needed.
Does Winston County have zoning?
We could not confirm a countywide zoning ordinance, zoning map or zoning districts for unincorporated Winston County from an official source2. That gap is not proof that every rural parcel is unrestricted. The same review did not confirm county rules for minimum lot size, setbacks, building height, manufactured homes or accessory dwellings. Ask the Winston County Board of Supervisors what ordinance applies to the parcel and whether another authority has jurisdiction5. Land inside Louisville or another incorporated municipality may be governed by that municipality rather than the county, so confirm the parcel's jurisdiction before relying on an answer about unincorporated land2. Septic siting remains regulated even where zoning is not confirmed, and wastewater must go to a central sewer or septic system rather than being discharged as gray water6.
How do septic permits work in Winston County?
The Mississippi State Department of Health administers onsite wastewater permitting for Winston County3. A permit is required for installation of an onsite wastewater system and for obtaining a permanent water meter4. Properties within one mile of a sewer line may be referred to connect, and the septic application may require a rejection letter from the sewer provider10. File the application, submit the requested documents, pay the applicable fee and prepare for a property visit11. The published charge for a Notice of Intent plus Final Approval is $197.50, while fees and online-processing costs can change12. A certified installer must contact the department 24 hours before construction begins to schedule an inspection13. Only 5.2% of Winston County soils lack severe limitations for a conventional drain field, so complete the evaluation before fixing a house site or purchase budget7.
Can you live in an RV or tiny home in Winston County?
We could not confirm an official Winston County rule that allows or prohibits full-time RV living, temporary camping or tiny-home occupancy on private land. Ask the Winston County Board of Supervisors about the specific parcel, intended duration, structure type and utility plan before buying or moving a unit onto the site5. If the parcel is inside a municipality, ask that municipality as well because county information does not establish city land-use rules2. Regardless of the dwelling type, Mississippi treats gray water as wastewater: household wastewater cannot be released onto the ground, into a ditch or into a body of water and must be piped to a central sewer or septic system6. An RV-park or campground rule does not answer whether one RV may be occupied on private rural land, so get a parcel-specific answer in writing.
Building a home in Winston County: the steps, in order
- Confirm whether the parcel is inside a municipality or in unincorporated Winston County, because the county's published information does not establish one zoning answer for every location2.
- Give the Winston County Board of Supervisors your parcel and project details, then ask for the applicable building, inspection, floodplain and county-road access requirements51.
- Contact the sewer provider if a line is nearby; applications within one mile of a sewer line may be referred for connection before septic review continues10.
- Apply to the Mississippi State Department of Health for the onsite wastewater permit and site evaluation before locking in the house location49.
- Hire a certified installer and have the installer give the department 24 hours' notice before construction for the required inspection13.
- If the driveway connects to a state highway, obtain the required Mississippi Department of Transportation permit before building or altering the drive14.
What should you check before buying land in Winston County?
Start with septic feasibility. Only 5.2% of Winston County soils lack severe limitations for a conventional drain field, so a low purchase price can be offset by a difficult system design7. Confirm whether sewer is available because a property within one mile of a line may be directed toward connection10. Verify legal access and ask the Board of Supervisors about a driveway onto a county road; the Board oversees county roads and bridges5. A new or altered driveway onto a state highway requires a state permit14. Check flood maps and ask the Board to identify the local floodplain contact because a Winston County floodplain permit process was not confirmed. Finally, price clearing and drainage: 83.2% of the county is wooded, 78.2% of the land has a slope of 15% or less, and annual precipitation is about 57 inches151617.
Watch-outs
- Do not treat the absence of a published county permit office as permission to build; ask the Winston County Board of Supervisors for a parcel-specific answer15.
- A permanent water meter depends on an approved sewage-disposal path, and a nearby sewer line can change whether a septic application proceeds410.
- Winston County's RV, tiny-home, setback and minimum-size rules could not be confirmed; ask the county or the municipality with jurisdiction before purchase2.
Sources
- Miss. Code Ann. §19-5-9(11) (2026 county census)
- Winston County Departments (2026 county census)
- On-Site Wastewater, quoted and re-checked
- WasteWater Frequently Asked Questions, quoted and re-checked
- Winston County Board of Supervisors (winstoncountyms.org)
- WasteWater Frequently Asked Questions, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Mississippi Uniform Building Codes (Mississippi statewide rule), quoted and re-checked
- Mississippi State Department of Health, Division of On-Site Wastewater (msdh.ms.gov)
- WasteWater Frequently Asked Questions, quoted and re-checked
- On-Site Wastewater, quoted and re-checked
- WasteWater Frequently Asked Questions, quoted and re-checked
- Notice of Intent: New Individual On-site Wastewater Disposal System, quoted and re-checked
- Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
- Wooded share of land: Bolthole Index county data
- Share of land at 15% slope or less: 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.