Zoning in Limestone County, Alabama: A Real Ordinance Under Real Growth Pressure

The zoning authority itself: Section 45-42-260

Code of Alabama Title 45, Chapter 42, Article 26, Section 45-42-260 gives the Limestone County Commission authority to divide unincorporated territory outside any municipality's corporate limits into business, industrial, and residential zones and to regulate the kind, character, and use of structures within them -- a genuine, live local act, not the empty "Reserved" placeholder found in most Alabama counties' equivalent code section. A separate 1994 local act (Act No. 94-671), upheld by the Alabama Court of Civil Appeals in Limestone County Commission v. Burnett Used Auto Parts, gives the county a narrower, related power to license junkyards and require highway-visibility screening near public rights-of-way.

What isn't fully documented in public sources is how completely that zoning authority has been built out into a comprehensive map covering every corner of unincorporated Limestone County, as opposed to running alongside the county's own subdivision regulations (most recently revised and restated in 2023) as the more commonly used day-to-day control. Practically: don't assume unincorporated Limestone County land is unrestricted the way it would be in a true no-zoning Alabama county. Confirm the specific zoning district (if any) that applies to a parcel directly with Limestone County Engineering / Building & Zoning before assuming either way.

The growth engine this zoning authority is actually managing: Mazda Toyota Manufacturing

Limestone County's zoning authority matters more here than in most Alabama counties because it sits underneath one of the largest industrial investments in the state's history. Mazda Toyota Manufacturing USA (MTMUS) -- a joint venture between Mazda and Toyota first announced in January 2018 at $1.6 billion and later increased to roughly $2.3 billion -- broke ground in November 2018 and began production in 2021 on a roughly 2,000-acre site in the Greenbrier area. The plant produces the Toyota Corolla Cross and the Mazda CX-50, has the capacity to assemble 300,000 vehicles a year, and passed 4,000 employees in 2023. MTMUS is commonly referenced with a Madison, Alabama address (Greenbrier sits near the Madison/Limestone county line), but regional business coverage -- including Business Alabama's own Limestone County economic-engine reporting -- describes it directly as the county's top industrial employer, anchoring a supplier network of on-site automotive partners that has generated thousands of additional jobs. This page treats MTMUS as a genuine Limestone County growth driver on that basis, though the precise county-line location of every part of its campus was not independently re-surveyed this pass -- worth a direct confirmation if a specific nearby parcel's taxing or zoning jurisdiction turns on which side of the Madison/Limestone line it falls on.

The residential growth MTMUS has pulled into the area is itself dated and specific: in March 2025, the Huntsville Planning Commission approved construction of more than 1,100 homes in the Greenbrier Preserve development, sited just down the road from the MTMUS plant, Polaris, and an Amazon fulfillment center. That a Huntsville-side planning body approved a Greenbrier-area subdivision, while Limestone County's own zoning and subdivision authority governs other parcels in the same corridor, is itself a sign of how fast this specific part of the county is filling in and how easily jurisdiction can shift parcel to parcel -- another reason to confirm the exact governing authority for any specific tract near the plant rather than assuming it from a neighboring property.

Layered on top: Shape Corp., Cast Products, and Pryor Field

MTMUS's scale sits alongside the smaller, still-genuine investments this project's prior research on Limestone County already identified: Shape Corp., a Tier 1 automotive supplier, completed a $74 million, 202,306-square-foot second Alabama plant in the Southpoint Industrial Park in Tanner in mid-2024, adding crash-management-component production and more than 100 jobs; Cast Products announced a $6.7 million foundry expansion in Athens the same year; and a $32.7 million aircraft-maintenance hangar project has been underway at Pryor Field Regional Airport in Tanner. Reporting from Business Alabama identified Limestone County as Alabama's fastest-growing county for four consecutive years as of 2024 -- and that trend, combined with MTMUS's own scale, is the real reason a buyer evaluating land anywhere in this county's Athens-Tanner-Greenbrier corridor should treat current zoning classification, road and utility capacity, and nearby rezoning activity as fast-moving facts to reconfirm, not settled ones to assume from an older listing or plat.