Mississippi

Mississippi is beginning to explore accessory dwelling units as a housing option, particularly in its growing metro areas. Jackson, Oxford, and coastal communities are considering or have adopted ADU-friendly zoning provisions. ADU Pass helps Mississippi homeowners work through the permit process.

537 ZIP codes
82 Counties
410 Cities

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State ADU details

State financing programs

Mississippi Home Corporation (MHC), the state housing finance agency created under the Mississippi Home Corporation Act of 1989 (Miss. Code Ann. Title 43 Chapter 33), does not operate an ADU-specific loan or grant product as of 2026-04-26. Construction or rehab of an ADU on a primary residence may be financed through MHC's general homebuyer programs (Smart6, MRB7, Home4All) when the ADU project is part of a qualifying primary-residence purchase or refinance, or through specialty programs (Housing Assistance for Teachers). The Mississippi Homeowner Assistance Fund (HAF) administered by MHC under the federal American Rescue Plan provides delinquency, displacement, and rehabilitation aid for owner-occupants but is not ADU-targeted. Mississippi has no state-funded ADU rebate, forgivable construction loan, or grant program comparable to CalHFA's ADU Grant.

checked 2026-04-26

State insurance regimes

Mississippi operates the Mississippi Windstorm Underwriting Association (MWUA), commonly called the 'wind pool', under Miss. Code Ann. Title 83 Chapter 34 (https://law.justia.com/codes/mississippi/title-83/chapter-34/). MWUA is the residual market insurer for windstorm and hail coverage in the six-county coastal area (Hancock, Harrison, Jackson, plus parts of George, Pearl River, and Stone counties). All licensed property insurers writing in Mississippi participate as members. MWUA writes a wind/hail policy that pairs with a separate ex-wind voluntary-market policy; it does not provide all-perils HO coverage. ADUs in the coastal-area MWUA territory follow the same wind-pool eligibility as the primary dwelling; an ADU rented to a tenant typically requires a separate dwelling-fire policy and a separate MWUA wind/hail endorsement. Inland Mississippi has no comparable residual market and uses the standard admitted homeowners market regulated by the Mississippi Insurance Department.

checked 2026-04-26

Known state issues (2)

  • policy-review (since 2025-01) — ADU permittability remains a city-by-city patchwork. Most Mississippi homeowners cannot rely on a state floor; permission depends entirely on the local zoning ordinance, which in many jurisdictions is silent or prohibitive. (source)
  • other (since 2007) — Coastal Mississippi ADU owners pay structurally higher insurance premiums than inland owners and face wind deductibles that can exceed several thousand dollars per claim. Underwriting capacity tightens during active hurricane seasons. (source)
Federal (United States) — ADU-relevant rules and programs

Federal ADU law

The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.

checked 2026-04-20

Federal financing programs

Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.

checked 2026-04-20

Federal tax credits

There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.

checked 2026-04-20

Federal housing programs

HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.

checked 2026-04-20

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