DeSoto County, Mississippi requires building permits for residential, commercial and industrial construction in the unincorporated county, and county building personnel conduct on-site inspections12. The county maintains a zoning map and zoning ordinance, but parcel applicability and municipal boundaries need parcel-level review3. New onsite wastewater systems require an application through the Mississippi State Department of Health45.
At a glance
- Building permit
- Required for residential, commercial and industrial construction in unincorporated areas1
- Building inspections
- County building personnel conduct on-site inspections2
- Zoning
- County zoning map and ordinance; confirm parcel jurisdiction3
- Septic permit
- A complete application goes through MSDH45
- Subdivision utilities
- Central water is generally required; individual septic needs written health approval67
- Owner-builder
- Own-residence work may be exempt from builder licensing, not local permits8
- RV or tiny home
- Occupancy rules were not confirmed; ask Planning & Building9
- Subdivision access
- Private access for landlocked lots needs Board approval before recording10
Who to call
Building permits
DeSoto County Planning & Building
Building permits, inspections, contractor licensing, zoning, rezoning, subdivision and site-plan review for unincorporated DeSoto County
365 Losher Street, Suite 200, Hernando, MS 38632
Septic permits
Mississippi Department of Health - Wastewater Call Center (serving DeSoto County)
On-site wastewater (septic) system permits and inspection requests for DeSoto County, now handled by phone since MSDH's local county office closed
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in DeSoto County, Mississippi?
Yes. DeSoto County Planning & Building processes permits for residential, commercial and industrial construction in the unincorporated county1. County building personnel also conduct on-site inspections, although the available county material does not give a complete inspection schedule or list every exemption2. Mississippi's statewide framework requires counties and municipalities to enact uniform building codes unless they opted out before November 30, 2014; ask Planning & Building which code edition and inspections apply to your project119. A complete county building-permit fee schedule was not confirmed, so get the current project-specific fee from the office before budgeting.
Who is the DeSoto County building department, and how do you reach it?
DeSoto County Planning & Building is the first stop for an unincorporated parcel. Reach the office at 365 Losher Street, Suite 200, Hernando, MS 38632, or call 662-469-80239. Planning staff evaluate rezonings and review subdivisions and site plans, while building staff process permits, inspect construction and maintain county licensing for general contractors, plumbers, electricians and mechanical contractors9. If you are dividing land, involve the office early: a division creating a lot of 10 acres or less requires Planning Commission and Board of Supervisors approval before filing or recording, while the quoted rule treats qualifying larger roadside parcels differently12. Published subdivision fees exist, but they are not a complete building-permit fee schedule13.
Does DeSoto County have zoning?
Yes. DeSoto County maintains an adopted zoning map, zoning ordinance and design-standard ordinance, but the correct district and whether county or municipal rules govern must be checked for the specific parcel3. Planning & Building handles rezoning evaluation plus subdivision and site-plan review9. The available material does not confirm countywide numbers for setbacks, minimum lot size, dwelling size, lot coverage or building height, so ask the office for the standards tied to the parcel's district. Do not assume an agricultural zoning label creates a blanket exemption from building or land-use requirements; no complete agricultural exemption was confirmed.
How do septic permits work in DeSoto County?
The Mississippi State Department of Health administers onsite wastewater review for DeSoto County, and a new system begins with a complete application45. The local MSDH office has closed, so call the Wastewater Call Center at 855-220-0192 for permit or inspection requests and inspector dispatch14. In a subdivision, individual septic is allowed only where central sewage is unavailable, written health approval is obtained and the required notation appears on the plat7. Only about 8.6% of county soils rate free of severe limits for a conventional drain field, making early site evaluation especially valuable15. The available material describes MSDH inspection work but does not say every existing system receives a mandatory inspection16.
Can you live in an RV or tiny home on your land in DeSoto County?
We could not confirm a DeSoto County rule that answers long-term RV occupancy, temporary camping or tiny-home occupancy. Because the county has zoning, ask Planning & Building whether the parcel's district allows the proposed unit, what foundation or utility rules apply, and whether occupancy during construction is allowed39. Do not treat an RV campground rule from another Mississippi district as an answer for private land in DeSoto County. Mississippi's owner-builder exemption can remove residential-builder licensing for work on your own residence, but it does not remove DeSoto County's building permit and inspection requirements812.
Building a home in DeSoto County: the steps, in order
- Ask Planning & Building to confirm whether the parcel is in county jurisdiction, its zoning district and any subdivision conditions39.
- Confirm legal access before closing; private-driveway access for subdivision lots or tracts that do not border a public road needs Board of Supervisors approval before recording10.
- Confirm water and sewer. Subdivisions generally must connect to central water unless the governing authority grants the stated exemption, and septic needs health approval where central sewer is unavailable67.
- Submit the building-permit package to Planning & Building and confirm required inspections and fees12.
- File the onsite wastewater application with MSDH and call 855-220-0192 for service514.
- For a state-highway driveway, obtain the required MDOT permit17.
What should you check before buying land in DeSoto County?
Start with jurisdiction and zoning: county materials require parcel-level review where municipal boundaries may change which rules apply3. If the seller is splitting land, determine whether the proposal creates a lot of 10 acres or less and therefore needs county subdivision approval before recording12. Verify road frontage too, because a private driveway serving a subdivision lot or tract without public-road frontage needs Board of Supervisors approval10. For subdivision utilities, do not assume a well and septic plan will qualify: central water is generally required unless an exemption is granted, and individual septic requires health approval where central sewer is unavailable67. Finally, budget for soil evaluation because only about 8.6% of county soils rate free of severe conventional-drain-field limits15.
Watch-outs
- DeSoto County's local MSDH office is closed; onsite wastewater permit and inspection requests now go through the Wastewater Call Center at 855-220-019214.
- A subdivision cannot simply default to a well and septic system: central water is generally required unless an exemption is granted, and septic needs written health approval where central sewage is unavailable67.
- Published DeSoto County subdivision fees are not a complete building-permit fee schedule; ask Planning & Building for the current charge on your project139.
Sources
- DeSoto County Planning & Building (2026 county census)
- Planning & Building, quoted and re-checked
- Planning & Building, quoted and re-checked
- On-Site Wastewater, quoted and re-checked
- On-Site Wastewater, quoted and re-checked
- Subdivision Regulations, quoted and re-checked
- Subdivision Regulations, quoted and re-checked
- Mississippi Senate Journal, March 9, 2022 (Mississippi statewide rule), quoted and re-checked
- DeSoto County Planning & Building (desotocountyms.gov)
- Subdivision Regulations, quoted and re-checked
- Mississippi Uniform Building Codes (Mississippi statewide rule), quoted and re-checked
- Subdivision Regulations, quoted and re-checked
- Subdivision Regulations, quoted and re-checked
- Mississippi Department of Health - Wastewater Call Center (serving DeSoto County) (desotocountyms.gov)
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- On-Site Wastewater, quoted and re-checked
- Mississippi Access Management Guide (Mississippi statewide rule), quoted and re-checked
Written September 29, 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.