5 county-level rules, plus city-specific rules for 3 cities in Rankin County, Mississippi.
Verified from official government sources
Mississippi does not have a statewide ADU statute, so accessory dwelling unit rules in Rankin County are set entirely by local zoning under MS Code Ann. §17-1-1 et seq. Brandon, Pearl, Flowood, Richland, and unincorporated Rankin County generally allow ADUs only through conditional use permits or special exceptions in specific residential zones, with typical maximum sizes of 600 to 1,000 square feet, owner-occupancy requirements, and off-street parking minimums. Mobile homes and manufactured housing used as ADUs face additional restrictions, and HOA covenants commonly prohibit ADUs outright.
Rankin County regulates sheds and outbuildings through local building and zoning codes. Small sheds under 120 to 200 square feet may be exempt from permit requirements in many municipalities.
Garage conversions in Rankin County require building permits from the applicable city or county building department and must meet residential habitability codes under the IRC. Brandon, Pearl, Flowood, Richland, and unincorporated Rankin County require that converted space maintain minimum off-street parking (typically 2 spaces per dwelling), provide egress windows, 7-foot minimum ceilings, proper HVAC, and fire separation from the remaining garage. Flood-zone properties near the Pearl River face elevation requirements, and conversions into separate dwelling units require ADU approval.
Rankin County requires building permits for carports. Must meet accessory structure setbacks (typically 5 ft side, 10 ft rear) and maximum lot coverage. Attached carports follow principal setbacks.
Rankin County treats foundation-built tiny homes as dwellings under 2018 IRC Appendix Q. Tiny homes on wheels classified as RVs and restricted to approved RV parks or campgrounds.
3 cities in Rankin County have their own accessory structures rules. Each link goes to that city's dedicated page with code citations.
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Rankin County Ordinance Hub →