Jefferson County, AL Accessory Structures: ADU Owner Occupancy (2026)

Section 1207(b) of the Jefferson County Zoning Resolution attaches an occupancy condition to every accessory dwelling unit approved under this Article: occupancy of the ADU is limited to members of the family, as defined in the Resolution, who reside in the detached dwelling unit on the lot. The county does not take that representation on faith, an affidavit is required, meaning the property owner must sign a sworn statement identifying the occupants and their family relationship to the owner before the unit can be occupied.

Because the rule ties occupancy to family membership rather than to any lease or rental arrangement, it functions as a de facto ban on renting the ADU to an unrelated tenant or short-term guest under this section; the unit exists as an extension of the household, not as an independent rental property. This occupancy condition sits alongside the rest of Section 1207's structural requirements, shared utilities with the primary structure, the 40%-of-principal-structure size cap, the rear-yard placement for detached units and the one-kitchen/one-bath/two-bedroom interior limit, meaning an ADU that is compliant on paper can still be in violation if the owner rents it to someone outside the family or fails to keep the required affidavit on file. 03.