Clay County, Mississippi does not publish a general building-permit office or process, so the building-permit requirement for an ordinary home in the unincorporated county remains unconfirmed1. The county adopted zoning for unincorporated areas in 1972, while West Point has its own zoning ordinance23. Septic permits for every address in the county, city or not, go through the Mississippi State Department of Health45.
At a glance
- Building permit
- County requirement and application process not confirmed; ask the Board of Supervisors before work16
- Building code
- A 2014 county planning assessment said no county code was adopted; current status is unconfirmed78
- Zoning
- Clay County adopted zoning for unincorporated areas; municipal rules may differ23
- Septic permit
- Required through the Mississippi State Department of Health45
- RV or tiny-home living
- Private-land occupancy rules not confirmed; ask the county before relying on either use96
- Owner-builder
- State residential-builder licensing exemption is available for work on your own residence10
- Water wells
- Groundwater permit required at the state casing-size threshold; some exclusions apply11
- Floodplain development
- Contact the Clay County Flood Plain Administrator before development in a flood-risk area12
Who to call
Also useful
Clay County Board of Supervisors (county main line)
General county-government questions and the starting point for confirming which office handles an unincorporated parcel's building, zoning or county-road question
P.O. Box 815, 365 Court Street, West Point, MS 39773
Septic permits
Mississippi State Department of Health Division of On-Site Wastewater
On-site wastewater applications, soil and site evaluations, inspections, wastewater complaints and private-well water sampling; Clay County is in the North Region
570 East Woodrow Wilson Drive, Jackson, MS 39216
Floodplain permits
Clay County Flood Plain Administrator
Floodplain administration and questions about the county Flood Damage Prevention Ordinance
Contact details are copied from each office’s official page and were checked against it on October 9, 2026.
Off-grid gear
Going off-grid in Clay 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.
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.
Do you need a building permit in Clay County, Mississippi?
Clay County, Mississippi has not published a general building-permit office, application process or fee schedule for an ordinary home in the unincorporated county, so do not begin construction on the assumption that no permit is needed1. An April 2014 hazard mitigation plan said Clay County had not adopted a building code, but that dated finding does not establish the current status, and it noted that the City of West Point had adopted one137. Mississippi's later uniform-code framework called for counties and municipalities to enact uniform codes unless they opted out by the state deadline8. Ask the Clay County Board of Supervisors which approvals, inspections and occupancy documents apply to the parcel6. An owner working on the owner's own residence can use Mississippi's residential-builder licensing exemption, but that exemption does not cancel a required permit or inspection10.
One building permit the county does spell out is for an RV park: developing or expanding an RV park in unincorporated Clay County requires a written application to the Clay County Tax Assessor's Office, review by the Building Inspector and a certificate of compliance before spaces can be rented14.
Who issues building permits in Clay County, and how do you reach them?
Clay County's official site does not identify a general building department or publish a residential building-permit process, so the Clay County Board of Supervisors is the practical starting point for an unincorporated parcel16. Clay County's main courthouse line is 662.494.3124, at 365 Court Street in West Point, and the staff there can direct you to the Board of Supervisors; we could not confirm a direct Board number6. Ask the Board who administers county zoning as well as any current building approval26. Septic questions go separately to the Mississippi State Department of Health Division of On-Site Wastewater at 1-855-220-019215. Flood-risk development questions go to the Clay County Flood Plain Administrator through the county main line, 662.494.3124; we could not confirm a direct number for that office126. A driveway connecting to a Mississippi state highway requires a state access permit for a new driveway or an alteration to an existing drive16.
Does Clay County, Mississippi have zoning?
Clay County adopted a zoning ordinance for unincorporated areas in 1972, so rural land should not be described as unrestricted2. The available material does not provide the zoning text, district map, setbacks, minimum lot sizes, lot-coverage limits, building-height limits or minimum dwelling size; ask the Clay County Board of Supervisors which district and standards apply to the parcel6. Rules change at municipal boundaries: West Point adopted its own zoning ordinance in 2000, and an incorporated municipality may administer its own zoning3. City zoning does not move septic permits, which stay with the Mississippi State Department of Health4. Confirm whether the parcel is inside a municipality before relying on county rules3. Floodplain regulation is a separate layer, and Clay County maintains a Flood Plain Administrator with a Flood Damage Prevention Ordinance12.
How do septic permits work in Clay County, Mississippi?
New individual on-site wastewater systems in Clay County go through the Mississippi State Department of Health, which places Clay County in its North Region415. Submit the application, required documents and fee; the local Environmentalist performs a soil and site evaluation, after which MSDH issues the Permit/Recommendation5. A certified installer must contact MSDH 24 hours before construction to schedule the inspection, and final approval requires the installation paperwork specified by the program17. The published final-approval fee is $222.50 plus a processing fee, while the soil-and-site-evaluation-plus-exemption option is $125 plus a processing fee5. Only 0.4% of Clay County soils are rated free of severe limitations for a conventional drain field, so make the site evaluation a purchase contingency rather than assuming a standard system will work18.
Can you live in an RV or tiny home on land in Clay County?
Clay County zoning applies in the unincorporated county, but we could not confirm what that ordinance allows for long-term RV occupancy, temporary camping or tiny-home occupancy2. Ask the Clay County Board of Supervisors about the parcel's zoning district and proposed use before buying an RV, moving a tiny home or arranging utility service6. West Point has separate zoning, so property inside the city requires a city-specific answer3. The county's RV Parks Ordinance covers commercial RV parks on a tract of at least 3 acres and treats occupancy there as temporary, and it does not establish a general right to live in an RV outside an RV park1920. Do not substitute Mississippi campground rules from another district for Clay County private-land rules; those rules apply only to the campgrounds named by that district21. Any occupied setup still needs a lawful wastewater plan because MSDH regulates individual on-site wastewater systems4. If public water is planned for a new septic system, present the MSDH Permit/Recommendation to the water utility to receive a meter22. Mississippi requires a manufactured home to pass a state installation inspection, arranged by the installer, retailer or developer through the State Fire Marshal's Office, before anyone occupies it, and any needed local permits must come first.23
Building a home in Clay County: the steps, in order
- Ask the Clay County Board of Supervisors to identify the current building, code, inspection and occupancy approvals for the exact unincorporated parcel, because the county publishes no general residential process16.
- Get the parcel's county zoning district and applicable use and dimensional rules; contact the municipality instead if the site lies inside city limits23.
- Check flood risk with the Clay County Flood Plain Administrator before grading, filling or construction12.
- Apply to MSDH for the septic soil and site evaluation and Permit/Recommendation before committing to a house location515.
- Have the certified installer notify MSDH 24 hours before septic construction so the inspection can be scheduled17.
- Obtain the state access permit if the driveway will connect to a Mississippi state highway16.
- For a well with surface casing at least 6 inches in diameter, apply for the state groundwater-withdrawal permit before drilling unless an exclusion applies11.
What should you check before buying land in Clay County?
Septic feasibility deserves attention first because only 0.4% of Clay County soils are rated free of severe limitations for a conventional drain field18. Water planning matters too: wells with surface casing diameters of 6 inches or greater generally require a groundwater-withdrawal permit before drilling, subject to exclusions, and the work must use a Mississippi-licensed water-well contractor11. Check flood exposure with the Clay County Flood Plain Administrator before choosing a building pad12. Confirm legal road access, and remember that a connection to a state highway requires a state access permit16. Clay County has about 44.4 people per square mile, while the nearest city of 100,000 or more is about 78 miles from the county center2425. The effective property-tax rate is about 0.7%, with a median annual bill near $7972627.
Watch-outs
- Clay County's general residential building-permit, inspection and certificate-of-occupancy process remains unconfirmed; ask the Board of Supervisors for a parcel-specific answer before construction16.
- Clay County has zoning, but private-land RV living, tiny-home occupancy, setbacks and minimum home or lot size remain unconfirmed; ask the county or the municipality with jurisdiction over the parcel236.
- Conventional septic conditions are difficult across nearly all mapped soils in Clay County, with only 0.4% rated free of severe limitations, so obtain the MSDH site evaluation before closing if septic is essential1815.
Sources
- Establishment of Recreational Vehicle (RV) Parks Ordinance (2026 county census)
- MEMA District 4 Regional Hazard Mitigation Plan, Annex D Clay County, quoted and re-checked
- MEMA District 4 Regional Hazard Mitigation Plan, Annex D Clay County, quoted and re-checked
- On-Site Wastewater - Mississippi State Department of Health, quoted and re-checked
- Notice of Intent: New Individual On-site Wastewater Disposal System, quoted and re-checked
- Clay County Board of Supervisors (county main line) (claycountyms.com)
- MEMA District 4 Regional Hazard Mitigation Plan, Annex D Clay County, quoted and re-checked
- Mississippi Uniform Building Codes (Mississippi statewide rule), quoted and re-checked
- MEMA District 4 Regional Hazard Mitigation Plan, Annex D Clay County (2026 county census)
- Mississippi Senate Journal, March 9, 2022 (Mississippi statewide rule), quoted and re-checked
- Guidelines for Securing the Services of a Water Well Driller, quoted and re-checked
- Clay County Flood Plain Administrator (claycountyms.com)
- MEMA District 4 Regional Hazard Mitigation Plan, Annex D Clay County, quoted and re-checked
- Establishment of Recreational Vehicle (RV) Parks Ordinance, quoted and re-checked
- Mississippi State Department of Health Division of On-Site Wastewater (msdh.ms.gov)
- Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
- Notice of Intent: New Individual On-site Wastewater Disposal System, quoted and re-checked
- 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
- Establishment of Recreational Vehicle (RV) Parks Ordinance, quoted and re-checked
- Establishment of Recreational Vehicle (RV) Parks Ordinance, quoted and re-checked
- General Campground Rules and Policies - Ross Barnett Reservoir (Mississippi statewide rule), quoted and re-checked
- Notice of Intent: New Individual On-site Wastewater Disposal System, quoted and re-checked
- MH-5 Uniform Standards Code for Factory-Built Homes Law (Mississippi statewide rule), quoted and re-checked
- Population density: Bolthole Index county data
- Straight-line distance from the county center to the nearest city of 100,000+ people: Bolthole Index county data
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: 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.