Tiny home rules in Southaven, MS — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
DeSoto County permits tiny homes on foundation as dwellings meeting IRC Appendix Q (400 sq ft minimum not required in Appendix Q). Tiny homes on wheels classified as RVs — only in approved RV parks.
DeSoto County adopts the Mississippi-approved 2018 IRC which includes Appendix Q for Tiny Houses (400 sq ft or less). Appendix Q provides alternative standards for ceiling heights, loft access, and egress. Foundation-built tiny homes are treated as single-family dwellings and must meet R-1/R-2/R-3 zoning district minimums — notably the R-1 single-family district typically requires a minimum house size of 1,200 to 1,800 sq ft in DeSoto County zoning, so true tiny homes under 400 sq ft do not fit most residential districts. Check RE (Rural Estate) and unincorporated areas with larger lot minimums — these may permit smaller dwellings with septic approval from MSDH. Tiny Homes on Wheels (THOWs) are classified as recreational vehicles under Mississippi Motor Vehicle Code and can only be used as permanent residences in licensed RV parks or mobile home parks — not in residential zoning districts. Detached ADUs are not widely authorized in DeSoto County zoning. Utility connections must include MSDH-approved septic or DRUA sewer connection.
Tiny home below minimum dwelling size: denied Certificate of Occupancy, no legal residence. THOW used as residence in residential zone: county citation $100 to $1,000 per day and required removal. Septic without MSDH permit: separate state violation.
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