ADU rules in Montgomery, AL — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Montgomery's zoning code addresses accessory dwelling units (ADUs) in residential districts. ADUs may be permitted as accessory uses in certain zones subject to conditions including owner occupancy and size limits.
Montgomery's zoning code (Appendix C) allows accessory structures in residential districts. ADUs (granny flats, in-law suites) may be permitted in some residential zones with conditions. Typically, the primary dwelling must be owner-occupied, and the ADU must be smaller than the primary residence. ADUs must meet building code standards and receive a building permit. Separate utility connections may require additional approval. Alabama does not have a statewide ADU mandate, so Montgomery's local zoning controls apply.
Building an unpermitted ADU may result in fines, required removal, or forced compliance with current building and zoning codes.
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See how Montgomery's adu rules rules stack up against other locations.
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