Jackson County, MS Building Setbacks & Zoning: Lot Coverage Limits (2026)

Jackson County's Zoning Ordinance sets maximum lot coverage district by district in the B. Lot Coverage section of each Table 5-3 dimensional table in Article 5. 1 caps coverage at 30% of the lot area, expressly counting both main and accessory buildings toward that limit. 3 (the A-2 and A-3 Agricultural-Residential districts), and through the single-family and two-family residential tables covering R-1, R-1A, R-1B, R-2, and R-5 Residential Estates. The multi-family districts, R-3 and R-4, list lot coverage as "Not Applicable" rather than a fixed percentage, since density in those districts is governed instead by dwelling-unit-per-acre limits.

12 for the C-2 Community Commercial District sets a much higher ceiling of 75% coverage, reflecting the district's built-out, storefront-to-storefront commercial character rather than the low-density agricultural and residential pattern found elsewhere in the unincorporated county. The A-1 table's accessory-structure provision layers on a further restriction: accessory buildings must sit at least 10 feet off each side and rear property line and cannot exceed 10% of the rear yard, a rule that works alongside, not in place of, the 30% whole-lot coverage cap. A property owner in the coastal floodplain must also coordinate coverage against the county's Base Flood Elevation height provisions in the same table, since impervious coverage and elevation requirements are reviewed together during Planning Department permitting at 2915 Canty Street in Pascagoula.