ADU Rules in Mississippi (2026)
ADU rules in Mississippi — no statewide ADU law. Regulation is entirely local. Key provisions and city-specific frameworks for accessory dwelling units.
Law Name
State ADU Law
Preempts Local Ordinances
No — local rules may be stricter
Has State Law
No — regulation is local
Local Control Framework
Mississippi does not have a statewide ADU law as of 2026 · Source
ADU regulation is left entirely to local municipalities · Source
Mississippi Code Title 17, Chapter 1 grants municipalities authority over local zoning · Source
Many Mississippi municipalities have limited zoning regulations — particularly smaller towns and rural areas · Source
Jackson, Gulfport, Biloxi, and Hattiesburg set their own local zoning and accessory dwelling rules · Source
Mississippi has a large rural population where informal secondary dwellings have historically been common without regulation · Source
Source: Mississippi Local Zoning Authority. Last verified April 5, 2026. View source