Jackson County, MS Accessory Structures: Carport Rules (2026)

Jackson County requires building permits for all carports in unincorporated areas under the 2018 International Residential Code, as adopted per MS Code §17-2-1. This includes pre-fabricated metal carport kits commonly sold by Mississippi suppliers - 'temporary' designation doesn't exempt structures from permit requirements. Applications through the Jackson County Building Department require site plans showing setbacks (typically 5 feet from side and rear property lines, 25 feet from front property line in residential zones), dimensions, height (typically 15-20 foot maximum), and structural details. The critical Gulf Coast requirement is hurricane wind load compliance - carports must meet 140 mph ASCE 7-16 design wind speeds for Jackson County's coastal location in Wind Exposure Category C or D. This requires engineered anchoring to concrete footings with properly sized hold-downs, not ground stakes or mobile home anchors alone. Post-Katrina and Zeta experience demonstrates unsecured carports become deadly projectiles. Lot coverage calculations include carports in maximum impervious coverage limits (typically 35-50% depending on zoning). Attached carports trigger the same setback requirements as the main house. Freestanding carports are treated as accessory structures. Subdivision covenants in Jackson County communities like Gulf Hills, Mary Walker Bayou, and St. Andrews may prohibit metal carports entirely. Materials must be rated for coastal salt spray corrosion.