Buying Land in St. Tammany Parish, Louisiana

The Causeway and Decades of Commuter-Driven Growth

The Lake Pontchartrain Causeway, connecting St. Tammany Parish's Northshore to Metairie and New Orleans across Lake Pontchartrain, is widely recognized as the longest continuous bridge over water in the world at roughly 24 miles. Since the Causeway's construction (completed in stages by the mid-1960s), it has functioned as the parish's primary commuter link to the New Orleans metro job market, and St. Tammany's population has grown substantially in the decades since -- transforming what was once a more rural, resort-oriented parish into one of the fastest-growing suburban areas in the state.

That growth accelerated further after Hurricane Katrina struck the New Orleans area in 2005: St. Tammany Parish, sitting on higher ground and largely spared the catastrophic flooding that affected Orleans, St. Bernard, and parts of Jefferson Parish, saw a further wave of relocation from residents and businesses seeking less flood-exposed ground north of the lake. Covington, Mandeville, and Slidell -- the parish's largest incorporated cities -- have all seen substantial residential and commercial development as a result.

Zoning and Subdivision: More Regulated Than Most Rural Parishes

Unlike most of Louisiana's smaller, more rural parishes -- which are often governed by a police jury with minimal parcel-level zoning -- St. Tammany Parish operates under a home-rule charter with an elected parish president and council, and has developed more comprehensive zoning and subdivision regulations to manage its sustained growth. For a buyer, this means zoning designation, minimum lot size, and subdivision approval processes are genuinely more likely to matter and to be actively enforced here than in a comparably rural-looking parcel in, say, St. Helena or Tensas Parish.

See the dedicated subdivision-development page below for more on how the parish's growth pattern has shaped its regulatory approach, and confirm a specific parcel's current zoning district and any subdivision or development-plan requirements directly with the parish Department of Planning and Development before buying.

Abita Springs and the Parish Beyond the Suburbs

Not all of St. Tammany Parish is suburban growth corridor. Abita Springs, a small town northeast of Covington, built its early identity around natural artesian mineral springs that drew health-focused visitors in the 19th and early 20th centuries, and the town remains home to Abita Brewing Company, which continues to use local spring water in its beer. The parish also retains rural, forested, and wetland acreage away from its growth corridors, particularly toward its northern and eastern edges, and the Tammany Trace -- a multi-use recreational trail built on a former rail corridor -- runs through several of the parish's towns.

Practical Due Diligence Before You Buy

Given the parish's active growth and more comprehensive zoning framework, confirm a specific parcel's current zoning district, subdivision status, and any pending rezoning or development-plan applications directly with the parish Department of Planning and Development. Check water, sewer, and road capacity for the specific area, since infrastructure can lag behind zoning approval in fast-growing corridors, and confirm FEMA flood zone status given the parish's mix of higher ground and lower-lying wetland and lakefront areas.