ADU rules in Jefferson Parish, LA — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Jefferson Parish's zoning ordinance has no modern by-right ADU program. Detached accessory buildings in residential districts are regulated as accessory structures (Sec. 40-743) and may not be used as separate dwellings unless the zoning district and lot expressly allow a second dwelling unit.
The unincorporated parish (including Metairie) is zoned by the Comprehensive Zoning Ordinance, Chapter 40. It regulates "accessory buildings and structures" under Sec. 40-743 rather than a standalone ADU/granny-flat category. A backyard structure is an accessory building; converting it to independent living quarters requires the underlying district to permit an additional dwelling unit and compliance with density, setback, parking and building-code rules. Incorporated cities (Kenner, Gretna, Harahan, Westwego, Grand Isle) set their own zoning. Confirm your zoning district with Jefferson Parish Planning before building or renting an accessory unit.
Unpermitted second dwellings and accessory-building violations are zoning violations enforced by Code Compliance; abatement, stop-work and fines apply.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Jefferson Parish has no ordinance banning home composting. Residents may compost yard and food waste in a backyard pile or bin, provided it does not create o...
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Jefferson Parish has no ordinance specifically permitting or banning artificial turf on private residential lawns. Front-yard and setback landscaping in new ...
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Jefferson Parish does not require native plants or ban ornamental lawns for private homes. Landscaping choices are up to the owner, subject only to the eight...
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Collecting rainwater is legal in Louisiana and encouraged for outdoor uses. Jefferson Parish sets no permit for residential rain barrels or cisterns. Only co...
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Jefferson Parish, in wet, riparian-rights south Louisiana, has no standing drought or day-of-week lawn-irrigation restrictions. There is no parish rule limit...
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Weeds are enforced under the same eight-inch limit as grass. Vacant and abandoned lots are handled by the Weed Control Section, and occupied properties by th...
See how Jefferson Parish's adu rules rules stack up against other locations.
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