Building permits, zoning and land rules in Pearl River County, Mississippi

In unincorporated Pearl River County, building permits and inspections apply under the adopted 2018 International Building Codes^1,2. A dwelling or mobile home in a development governed by the county subdivision regulations needs a building permit before construction, erection or placement; developments commenced after adoption of the order need final plat approval and Board of Supervisors acceptance before building permits can be issued⁴. Inside city limits, Picayune issues building permits for renovations, additions and new construction, while Poplarville handles its own building permits, including manufactured homes in parks before utility connection^5,6. Onsite septic systems in both cities remain under MSDH, subject to municipal sewer requirements⁷.

For building permits on unincorporated land, contact the Pearl River County Planning & Building Department at 601-403-2202 or 100 S Main Street, Poplarville, MS 39470¹. The department handles site-development and building-construction permits, code enforcement and floodplain management¹. Subdivision filing costs $300 plus $20 per lot, and construction-plan review costs $20 per lot; those charges are not a general building-permit fee schedule⁴. Ask Planning & Building for the project-specific building-permit checklist, inspection requirements and price¹.

We could not confirm countywide zoning for unincorporated Pearl River County; ask Planning & Building about the intended parcel use^1,3. Picayune and Poplarville administer their own zoning inside city limits, while MSDH remains the onsite septic authority^7,12,13. In unincorporated subdivisions, Residential I and II require 35-foot front, 10-foot side and 15-foot rear setbacks; Residential III requires a 30-foot front setback and Residential IV requires 25 feet, with the same side and rear setbacks⁴. Minimum lot areas are 7,500 square feet for Residential I, 1 acre for Residential II, 3 acres for Residential III and 10 acres for Residential IV⁴. These are subdivision standards; general setbacks outside those development types, minimum dwelling size, lot coverage and building height remain unconfirmed, so request a parcel review^1,3,4.

The Mississippi State Department of Health administers onsite wastewater in Pearl River County; the county health department in Carriere is the local contact^7,14. New systems require MSDH approval unless a qualifying exemption applies⁸. Before construction or placement of a home that may need septic, submit a Notice of Intent with a legal description, plot plan and fee; MSDH evaluates the site and issues a nontransferable Permit/Recommendation valid for two years unless extensive grading or site or dwelling changes void it⁸. Systems requiring Final Approval need an inspection, installation affidavit, any required advanced-treatment maintenance affidavit and fee; failed inspections require reinspection with a fee each time¹⁵. For existing systems, qualifying properties of 2 acres or more are exempt from connection-event inspections only if they have a single qualifying residence, contain all wastewater, affect no watercourse and involve no commercial development; other entities may still require MSDH Final Approval¹⁵. That exemption does not waive every wastewater requirement; ask the health department whether the property qualifies^14,15. Only about 21.9% of county soils lack severe limitations for conventional drain fields, so resolve septic feasibility before buying¹⁶.

Pearl River County treats recreational or seasonal camping in an RV or other non-conventional housing unit as temporary, non-permanent lodging⁹. A Special Use Permit limits occupancy to 14 consecutive days per stay and 180 total days per parcel each year⁹. A qualifying hardship variance can authorize occupancy for up to 12 months and may be renewed annually with documentation⁹. The county generally allows one non-conventional housing unit per parcel, with an immediate-family hardship exception⁹. The flat fee for non-conventional-housing permits, including Special Use, Hardship Variance and Temporary Power Pole permits, is $50¹⁷. Rental, lease, short-term rental and other compensated occupancy are prohibited⁹. A tiny home on wheels that does not comply with the residential or building code is treated as a non-conventional housing unit and remains subject to sanitation, water, electrical, floodplain, setback and occupancy conditions⁹. Minimum dwelling size remains unconfirmed, so ask Planning & Building before choosing permanent tiny-house plans^1,3.

1. Ask Planning & Building for a parcel review, the building-permit checklist and the applicable fees¹.

1. Confirm that a subdivision lot has final plat approval and Board of Supervisors acceptance, then verify its residential development type, minimum lot area and setbacks⁴.

1. Submit a Notice of Intent to the Mississippi State Department of Health before construction or placement of a home that may need an onsite wastewater system^14,15.

1. If the site is in an identified Special Flood Hazard Area, obtain an elevation certificate from a land surveyor for the building-permit application¹¹.

1. Obtain the building permit and complete the inspections required by the adopted codes¹.

1. Complete the septic installation and any required inspection and Final Approval paperwork; ask MSDH whether an exemption applies^8,14,15.

1. An owner building for personal use may qualify for the state contractor-licensing exemption if the property is not for sale, rent, public use or public assembly, but county building permits and inspections still apply¹⁰.

Start with legal access, subdivision status and written confirmation from Planning & Building about the intended use because countywide zoning and general county-road driveway rules remain unconfirmed^1,3,4. For an unincorporated subdivision parcel, identify the residential development type and verify both its minimum lot area and building setbacks before designing the site plan⁴. Check the flood map early because an identified Special Flood Hazard Area triggers a surveyor-issued elevation certificate for the building-permit application¹¹. Make septic feasibility a contract contingency: only about 21.9% of county soils are rated without severe limitations for a conventional drain field¹⁶. The terrain is broadly gentle, with about 92.8% of land at a slope of 15% or less, but a parcel-level survey and soil evaluation still control the buildable layout¹⁶.