Alabama ADU Laws

ADU Laws in Alabama (2026)

Alabama state ADU law details, key provisions, preemption status, and recent legislative changes for accessory dwelling units.

Law Name

State ADU Law

Preempts Local Ordinances

No — local rules may be stricter

Has State Law

Yes

Key Provisions

Alabama does not have a statewide ADU law as of 2026
ADU regulation is left entirely to local municipalities
Alabama Code Title 11 grants municipalities broad authority over zoning and land use
Birmingham, Huntsville, Montgomery, and Mobile set their own local ADU and accessory dwelling rules
Alabama has no statewide housing preemption law requiring municipalities to allow ADUs
Many Alabama municipalities do not explicitly permit ADUs in residential zones

Source: Alabama State ADU Law. Last verified April 5, 2026. View source

Last updated: April 5, 2026