Tiny home rules in Harrison County, 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.
Harrison County applies IRC Appendix Q for foundation-built tiny homes. Tiny homes on wheels treated as RVs/manufactured housing under MS Code §75-49-1. Minimum dwelling size varies by zone. Post-Katrina cottage provisions may allow flexibility.
Mississippi adopts the International Residential Code. Harrison County, Gulfport, and Biloxi treat foundation-built tiny homes (under 400 sq ft) under IRC Appendix Q standards. Minimum dwelling unit sizes vary: typical 600-800 sq ft in R-1, some zones allow smaller. Tiny homes on wheels (THOW) are classified as recreational vehicles or manufactured homes under MS Code §75-49-1 (Manufactured Housing Act) requiring HUD label for permanent residence. RVs cannot be used as permanent dwellings in most residential zones. Post-Hurricane Katrina, Mississippi Cottage (MEMA Cottage) provisions created some flexibility for small manufactured units. ADU ordinances are limited — Gulfport allows accessory dwelling units in certain districts. Utilities must connect to municipal systems or approved septic.
Non-compliant dwelling: no certificate of occupancy, required removal. RV as permanent residence: zoning violation $50-$500/day. Foundation tiny without permit: retroactive permitting with penalties.
Harrison County, MS
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Harrison County, MS
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Harrison County, MS
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Harrison County, MS
Harrison County permits residential rainwater harvesting without restriction. Mississippi has no state law limiting rainwater collection, and the county enco...
Harrison County, MS
Harrison County requires permits to remove trees over 6-12 inch DBH in most municipalities. Live oaks are specially protected in Gulfport and Biloxi. Hurrica...
Harrison County, MS
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See how Harrison County's tiny homes rules stack up against other locations.
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