Building permits, zoning and land rules in Harrison County, Mississippi

Unincorporated Harrison County, Mississippi requires building permits through Harrison County Code Administration¹. County building-permit rules below apply outside city limits; Biloxi issues building permits for construction and alterations, Long Beach requires them in Special Use Districts, D'Iberville requires them before utility connections to manufactured homes in parks or subdivisions, and Pass Christian requires them for outbuildings^8,9,10,11. Onsite wastewater remains under the Mississippi State Department of Health (MSDH)³. A qualifying owner building for personal use may avoid the residential-builder license, but the exemption does not waive county building permits^6,12. The county enforces adopted building codes, but we could not confirm the edition or complete inspection sequence; ask Code Administration for the project checklist^1,2.

For unincorporated Harrison County building permits, contact Code Administration at 15309 Community Road, Gulfport, MS 39503, telephone 228-832-1622¹. The office publishes hours of 8 am to 5 pm, Monday through Friday, but we could not confirm the complete application, review and inspection sequence¹. Land-use questions go to the Harrison County Office of Zoning at 12423 Seaway Rd.; the office administers, enforces and hears appeals under the zoning ordinance⁵. Onsite wastewater questions go through the Harrison County Health Department at 1-855-220-0192 and the state application site¹³. For access from a county-maintained road, contact the Harrison County Road Department at 228-896-0201¹³. Mobile-home permits cost $50 on private property and $25 in a mobile-home park, but a complete ordinary home-permit fee schedule was not confirmed¹³.

The Mississippi State Department of Health administers onsite wastewater systems in Harrison County; applications and fees go through its Division of On-site Wastewater^3,4. MSDH requires a permit for onsite wastewater installation and a water meter, and a permanent water meter requires a sewer line or septic system⁴. Sewer systems have first right to serve: MSDH refers applications near a sewer line for connection and requires a sewer-provider rejection letter before proceeding with septic⁴. Standard manufactured-home parks require central water and sewer, but qualifying low-density parks may use individual septic systems; individual wells are prohibited². A certified installer must contact MSDH 24 hours before construction to schedule inspection¹⁴. Start with the Harrison County Health Department at 1-855-220-0192 or the state application site¹³. Only 10.3% of county soils lack severe limitations for conventional drain fields, so obtain the site evaluation before fixing the home location⁷.

A recreational vehicle is not a residential dwelling and may not be used as a permanent place of abode in unincorporated Harrison County². A narrow temporary-use route exists for qualifying hunting property larger than 160 acres and certain waterfront property subject to routine inundation, but placement in residential or agricultural districts requires a conditional-use permit². Under that route, an RV may remain for no more than 17 continuous days and must be removed for four days before a new period begins². We could not confirm a countywide tiny-home occupancy rule or general minimum dwelling size; ask the Office of Zoning how the parcel's district classifies the proposed unit⁵. Manufactured-home parks have a separate occupancy gate: at least 45% of planned spaces must be completed and ready before any space is occupied, and residents must not travel through construction areas². That park rule does not settle manufactured-home placement outside a park; ask the Office of Zoning about the proposed parcel^2,5.

1. Ask the Office of Zoning to confirm the parcel's district, allowed residential use, setbacks, lot coverage and dimensional standards^2,5.
2. Resolve sewer availability first, including any required sewer-provider rejection letter, then apply to MSDH if the parcel will use septic^4,13.
3. Confirm flood status before earthwork: development in a special flood hazard area requires a county development permit with a $50 fee¹⁵. A floodway project requires elevation documentation and additional engineered submissions¹⁶.
4. Confirm driveway jurisdiction; a new or altered driveway onto a state highway requires a state permit^2,17.
5. Submit the project through Code Administration's portal and request the exact plans, trade permits, inspections, fees and occupancy closeout documents^1,2.
6. Arrange the required septic inspection and secure the applicable health acceptance documentation^13,14.

Start with zoning, septic feasibility, flood exposure and legal road access because each can change where—or whether—the intended home fits^2,3,15. Mississippi treats gray water as wastewater: all wastewater must be piped to central sewer or septic, with no discharge onto the ground, into ditches or into bodies of water⁴. A permanent water meter also requires a permanent sewage-disposal solution⁴. If you plan to divide the tract, the County Engineer administers and enforces subdivision regulations². Only 10.3% of county soils are rated without severe limitations for a conventional drain field, so obtain a site-specific wastewater review⁷. The effective property-tax rate is about 0.6%, and the median property-tax bill is about $1,289 per year⁷. Before closing, obtain parcel-specific answers from Zoning, Health and Roads^5,13.