Southaven, MS Accessory Structures: Garage Conversions (2026)

Chapter 13 of the Southaven Planning and Development Ordinance states that storage and accessory buildings 'may not be used for dwelling purposes,' which restricts converting a detached garage into a stand-alone living unit. Converting an attached garage into heated, finished living space within the principal dwelling is generally treated as an interior remodel under the Mississippi-adopted International Residential Code (IRC), but it requires a building permit, plan review, and inspections through the Southaven Building Department. Because Chapter 7 requires two off-street parking spaces per dwelling unit, replacement parking (a code-compliant driveway extension or new pad) typically must be provided when the garage is removed. Egress windows, smoke and carbon monoxide alarms, insulation, and HVAC capacity are reviewed under the IRC; electrical and plumbing changes require separate permits and licensed contractors. Accessory structures are also capped at 50 percent of the heated principal-structure square footage and cannot occupy more than 30 percent of the rear yard. Confirm permit fees, plan-review requirements, and any rental implications with the Southaven Building Department before starting work.