Accessory Structures in Horn Lake, MS (2026)
3 verified accessory structures rules for Horn Lake, Mississippi, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Horn Lake regulates accessory dwelling units (ADUs), guest houses, and accessory structures through its Zoning Ordinance (Code of Ordinances Appendix A) and Chapter 8 Building and Building Regulations. Mississippi has no statewide ADU preemption law - Miss. Code Ann. § 17-1-9 leaves zoning entirely with the municipality. The city's Planning and Development Department issues a separate Residential Accessory Building Permit and reviews applications under the zoning appendix's residential district standards. Construction is governed by the city-adopted International Residential Code under Miss. Code Ann. § 21-19-25.
ADU Rules in Horn Lake
Some RestrictionsShed Rules
Horn Lake requires permits for accessory structures over 120 square feet. Sheds must be placed behind the front building line and setback 5 feet from property lines in the city's predominantly suburban residential lots.
Horn Lake Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Converting a Horn Lake garage to habitable space requires a residential building permit from Planning and Development (3101 Goodman Rd. W.) plus zoning verification under Appendix A (Zoning) of the Code of Ordinances. The work must meet the Mississippi-adopted International Residential Code. Loss of required off-street parking is the most common denial reason. Call Planning at (662) 393-6705.
Garage Conversion Permits in Horn Lake
Some RestrictionsLooking for Desoto County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Horn Lake city rules.
Accessory Structures in Desoto County →