Accessory Structures in Baton Rouge, LA (2026)
9 verified accessory structures rules for Baton Rouge, Louisiana, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Baton Rouge permits ADUs in certain zoning districts (A1 and A2) under the UDC. ADU allowances are more limited than in states like California. Recent UDC updates are gradually expanding ADU options.
Baton Rouge ADU / Accessory Dwelling Rules
Some RestrictionsADU Permits
Baton Rouge regulates accessory dwelling units through the East Baton Rouge Parish Unified Development Code (UDC), administered by the Department of Development for the City-Parish consolidated government. ADUs (called 'accessory living quarters' in the UDC) are permitted in most residential zones subject to lot-size, size-cap, and setback rules. Louisiana has no statewide ADU preemption — La. R.S. 33:101 et seq. grants the City-Parish broad zoning authority. The 2021 Louisiana State Uniform Construction Code applies to construction.
Baton Rouge ADU Permits (East Baton Rouge UDC + La. R.S. 33)
Some RestrictionsADU Impact Fees
Baton Rouge does not charge general residential development impact fees on ADUs. Louisiana has no statewide impact-fee enabling act, and the City-Parish has not established an impact-fee program for residential construction. Costs are limited to Permits and Inspections building permit fees, Baton Rouge Water Company connection fees, and East Baton Rouge sewer connection fees under the Sanitary Sewer Master Plan / SSO Consent Decree program.
Baton Rouge ADU Impact Fees (Limited — Louisiana Restricts Impact Fee Authority)
Few RestrictionsADU Owner Occupancy
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).
Baton Rouge ADU Owner-Occupancy (UDC Accessory Use Requirements)
Some RestrictionsADU Rental Restrictions
Baton Rouge permits long-term (30+ day) rental of accessory living quarters as a single-household residential use consistent with the accessory-use framework. Short-term rentals (under 30 days) require a Short Term Rental permit through the Department of Development under the City-Parish STR ordinance and remittance of state, parish, and city lodging taxes. Louisiana lease law (La. Civ. Code arts. 2668-2729) governs long-term tenancies. Louisiana has no statewide rent control.
Baton Rouge ADU Rental Restrictions (Long-Term + STR Permit)
Some RestrictionsShed Rules
Baton Rouge requires permits for accessory structures over 200 square feet. Structures 200 square feet or less may be exempt from permits but must comply with UDC setback and placement standards.
Baton Rouge Shed & Outbuilding Rules
Some RestrictionsCity of Baton Rouge — Residential Permits
Any accessory structure over 200 square feet requires a permit. Permits are issued through the Permits and Inspections Division per the Unified Development Code and Municipal Code of Ordinances.
Garage Conversions
Garage conversions in Baton Rouge require building permits and must meet building code standards for habitable space. Zoning requirements for parking must be maintained — replacement parking may be needed.
Baton Rouge Garage Conversion Rules
Some RestrictionsCity of Baton Rouge — Residential Permits
Any structural modification to an interior or exterior wall requires a permit, which applies to garage conversion projects per the Unified Development Code and Municipal Code of Ordinances.
Carport Rules
Carports in Baton Rouge/East Baton Rouge Parish require a building permit through the Department of Development (Permits & Inspections) and must comply with Title 7 Unified Development Code (UDC) zoning setbacks for accessory structures. Title 8 building codes adopt the Louisiana State Uniform Construction Code (LSUCC).
Carport Rules in Baton Rouge
Some RestrictionsTiny Homes
Tiny homes on permanent foundations in Baton Rouge must comply with the Louisiana State Uniform Construction Code (LSUCC, La. R.S. 40:1730.21+) and Title 7 Unified Development Code zoning. Louisiana adopts the IRC; some jurisdictions accept Appendix Q for dwellings under 400 sq ft. Tiny houses on wheels (THOWs) are treated as RVs and not permitted as permanent dwellings in residential zones.
Tiny Homes in Baton Rouge
Some RestrictionsLooking for East Baton Rouge Parish county-wide rules?
County ordinances apply to unincorporated areas and may supplement Baton Rouge city rules.
Accessory Structures in East Baton Rouge Parish →