St. Tammany Parish, LA Data Centers & Crypto Mining: Data Center Zoning & Siting (2026)

Exhibit 400-7, the industrial permitted-use table referenced in Sec. 400-5.1.B, lists "Data center and data warehousing" with a "P" only in the AML column; the I-1, I-2, I-3, SWM-1, and SWM-2 industrial districts carry no letter for the use, which under the table's own key means it is not permitted there at all. Sec. 400-5.1.H explains why: the AML Advanced Manufacturing and Logistics District exists "to provide for the location of very large-scale facilities for the research and development, advanced manufacturing, and transportation/logistics industries," sited close to major high-capacity transportation routes with multi-modal access, and data centers sit on the district's own permitted-use list alongside distribution facilities, advanced and light manufacturing, and research and development.

An AML project has to meet the district's own dimensional standards. The maximum building ground floor area is 1,000,000 square feet, measured within the exterior walls and excluding detached structures, carports, patios, decks, cantilevered projections, and required ramps or stairways. A new lot cannot be created below 20,000 square feet, and lot width must run at least 80 feet where the site has central water and sewer. Where an AML lot adjoins a residential district, the parish requires a 75-foot buffer along the shared lot line, and any building taller than 25 feet in that yard adds one more foot of setback for every additional foot of height, measured separately on each building facade.