Buying Land in Jefferson Parish, Louisiana

One parish, several very different places

Jefferson Parish is unusual among the nine parishes covered here in that it isn't a single rural or agricultural landscape -- it's a large, populous parish immediately adjacent to New Orleans that contains dense urban and suburban development, working industrial and port land, remote coastal wetlands, and a barrier island, all within one parish government's jurisdiction. On the East Bank of the Mississippi River, Metairie and Kenner form a densely populated, largely built-out suburban core (Kenner is also home to Louis Armstrong New Orleans International Airport). On the West Bank, Gretna (the parish seat), Marrero, Harvey, and Westwego form another substantially developed suburban and industrial corridor. South of both, the parish's character changes dramatically: the town of Lafitte and the broader Barataria area sit amid coastal wetlands with a long fishing and trapping heritage, and further south still, Grand Isle -- reachable by a single highway -- is the only inhabited barrier island in Louisiana.

For a buyer, that range means Jefferson Parish can't be evaluated as a single land-use environment. A parcel in Metairie is an urban real estate question; a parcel near Lafitte or on Grand Isle is a coastal wetlands and flood-risk question with a fundamentally different due-diligence checklist. Confirm early which of these very different parts of the parish a target property actually sits in.

Parish government: a home-rule charter, not a Police Jury

Jefferson Parish operates under a home-rule charter with an elected Parish President and Parish Council, a structure distinct from the Police Jury system that governs most other Louisiana parishes, including the smaller, more rural parishes covered elsewhere on this site. Practically, this means zoning, permitting, and planning functions in Jefferson Parish run through dedicated parish departments organized under that charter government, rather than through a police jury -- worth knowing simply so you're contacting the right office when researching a specific parcel.

A major post-Katrina levee system, and a coastal south that sits outside it

Following the catastrophic flooding of Hurricane Katrina in 2005, the US Army Corps of Engineers built a substantially upgraded regional hurricane and storm damage risk reduction system protecting the greater New Orleans metro area, Jefferson Parish included -- a genuinely significant, well-documented piece of post-Katrina infrastructure that materially changed the flood-risk picture for protected communities in the parish's northern and central areas. That protection does not extend everywhere in the parish, though: much of southern Jefferson Parish, including the Barataria Basin wetlands and Grand Isle itself, sits outside the federal system's protected footprint and continues to face the same coastal wetland loss, subsidence, and storm-surge exposure documented across coastal Louisiana generally. See the dedicated flood-zones page below for a deeper look at what the levee system does and doesn't cover.

What this means for due diligence

Given how differently the parish's various areas are situated, pull a current FEMA flood-zone determination for any specific Jefferson Parish parcel regardless of which part of the parish it's in, and confirm directly with the parish's planning and zoning department how the land-use rules for that specific area apply -- zoning in dense Metairie looks nothing like land-use practice in Lafitte or on Grand Isle. As with the rest of Louisiana, Louisiana's civil-law succession and forced-heirship rules apply here too, though they're most likely to come up on longer-held family property in the parish's less urbanized southern communities rather than on ordinary suburban real estate.