The East Baton Rouge Unified Development Code treats accessory living quarters as an accessory use, which under longstanding Louisiana zoning practice implies the principal use (the main single-family dwelling) must remain in place and active. Property owner occupancy of either the main dwelling or the ADU is the practical norm and is typically conditioned at permit issuance. Louisiana has no state preemption of local owner-occupancy rules (unlike California or Oregon).
The East Baton Rouge UDC classifies accessory living quarters as an accessory use to the principal single-family dwelling under the use tables for the A1 through A4.1 single-family residential districts. Under Louisiana zoning practice and La. R.S. 33:4721 et seq., an accessory use cannot exist independently of its principal use — meaning the lot must continue to function as a single-family residential lot with the main dwelling occupied as a single household. The UDC limits each parcel to one accessory living quarters and prohibits subdivision of the lot to create a second principal dwelling without rezoning. As a practical matter, the Department of Development issues accessory living quarters approvals on the condition that the property remains a single-family residential parcel with the principal dwelling in active residential use; pure investor configurations (owner off-site, both units rented to unrelated tenants as separate households without limitation) can be challenged as creating a de facto duplex in a single-family zone. Louisiana has no state preemption of municipal owner-occupancy or accessory-use rules; the legislature has not enacted any equivalent of California's AB 671, Oregon's HB 2001, or Idaho's §67-6511A. Documentation typically reviewed: La. R.S. 47:1703.1 homestead exemption status, driver's license address, and utility account holder. HOA covenants under Louisiana Civil Code Articles 775-783 (building restrictions) may impose stricter owner-occupancy rules independent of zoning.
Operating the property as a de facto duplex contrary to the accessory-use rules can trigger UDC enforcement by the Department of Development including Notice of Violation, stop-occupancy orders, and daily fines under City-Parish Code Title 1. Repeated violations can result in revocation of the accessory living quarters approval and require de-conversion of the unit. La. R.S. 33:4720.59 authorizes the City-Parish to enforce zoning through injunction and civil penalties.
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