Buying Farm Land in Doña Ana County, New Mexico

Where agriculture is actually zoned, and what's allowed by right

Doña Ana County's 2017 Unified Development Code (UDC, Ordinance No. 287-2016) puts most working farmland in the T2 (Rural) zone -- sparsely settled land in open or cultivated condition, including bosque, agricultural land, and grazing land, with typical uses including single-family homes (site-built and manufactured), farmhouses, and agricultural buildings. Agriculture is a permitted, by-right use in T2, but the code draws a real line at scale: agriculture is permitted for existing on-site farm operations, and packaging, warehousing, or processing of off-site products may be allowed but is treated as a use requiring closer review; a Special Use Permit (SUP) is required for anything the code doesn't already allow by right. A roadside farm stand is capped at 600 square feet and can be open-air, but a larger retail or processing operation on agricultural land will likely need an SUP.

For land in the county's rural-residential districts -- Equestrian/Estate-Agriculture (EE), Residential Estate (RE), and Residential Estate Mobile (REM) -- agricultural and equestrian use is compatible with residential living on larger lots, but livestock-keeping specifically requires a minimum lot size of 0.75 acre (32,670 square feet); a smaller parcel in these districts generally can't keep livestock regardless of its zoning designation otherwise permitting agriculture. And regardless of district, larger-scale agricultural processing activities -- dairies, feedlots, slaughterhouses, commercial poultry operations, or swine processing -- are confined to the county's commercial and industrial zones, not permitted outright on agricultural or rural-residential land.

The UDC also changed a specific, documented number worth knowing if you're looking at a smaller irrigated tract: the minimum lot size for subdividing agricultural land dropped from 10 acres to 2 acres in the 2017 rewrite. That matters directly for a smaller parcel that might have been below the legal subdivision threshold a decade ago but qualifies today -- though a minimum lot size for subdivision approval is a separate question from whether the resulting lot is independently buildable under its zone, so confirm both with the Community Development Department (CDD) before assuming a proposed split is straightforward.

EBID: the district that actually delivers the water, separate from the underlying water right

The Elephant Butte Irrigation District (EBID), headquartered at 530 S. Melendres St. in Las Cruces, is the surface-water delivery system for irrigated farmland in Doña Ana County (and the Rincon Valley portion of neighboring Sierra County) downstream of Caballo Dam -- roughly 90,640 water-righted acres across more than 8,000 water-user accounts, of which about 3,600 are farm tracts of 2 or more irrigated acres. EBID membership and its physical delivery infrastructure are the actual gatekeeper of whether a parcel described as 'irrigated' can really put water on a crop in a given season -- a water right on paper and a working, connected EBID delivery point are two different things, and only the second one grows chile or pecans.

Water rights in the district are appurtenant to the land -- they generally transfer automatically when EBID-served land is sold -- but they can also be suspended and transferred separately from one tract to another, either through an EBID-approved suspension-and-transfer form or by leasing the annual allotment at EBID's set lease rate. Some accounts inside flood-control dam areas also carry a Local Improvement District (LID) assessment that is a non-suspendable, permanent charge against the property -- confirm whether a specific parcel carries this before assuming its EBID costs are limited to a standard water-order or delivery fee. For any farmland purchase here, get EBID's own account and delivery-history records for the specific tract (575-526-6671 or 575-524-8003 for Water Records), not just the seller's description of 'water rights included.'

The 2026 Rio Grande Compact settlement: a real, current threat to Doña Ana farmland supply

This is the single most important, timely fact for anyone buying agricultural land in this county right now. Texas sued New Mexico in 2013 at the U.S. Supreme Court, alleging that New Mexico groundwater pumping below Elephant Butte Dam had deprived downstream Texas and Rio Grande Project water users of water apportioned to them under the 1938 Rio Grande Compact. After more than a decade of litigation, the states reached a settlement in August 2025, and the U.S. Supreme Court formally approved it on May 27, 2026, ending the dispute.

The settlement's terms are specific and directly relevant to farmland here: it sets a 57%–43% division of irrigation water below Elephant Butte, with the larger share going to New Mexico farmers, but it also requires New Mexico to reduce groundwater pumping in the Lower Rio Grande basin -- which includes Doña Ana County -- by 18,200 acre-feet within 10 years, with half of that reduction required within the first 5 years. New Mexico has until May 2036 to complete the cuts. The state's 2026 legislative session appropriated more than $22 million toward retiring irrigated farmland, improving conservation, and expanding monitoring under the settlement, on top of $150 million already allocated for a voluntary water-rights purchase program: farmers actively using groundwater rights can sell them to the state, which permanently retires the right and lets the land go fallow. Between 2021 and 2024, more than 80% of groundwater used in the basin went to agriculture -- meaning the state's reduction target will overwhelmingly be met by retiring farmland, not municipal or industrial use.

For a buyer, that means the water-rights status of any irrigated (or groundwater-dependent) parcel here now carries a live, active risk that didn't exist a few years ago: the current owner may already be negotiating, or may in the future be approached, to sell the underlying groundwater right into the state's retirement program, which would permanently end that land's irrigated status regardless of what the deed or zoning says today. Ask directly whether a parcel's water right has been offered, applied, or enrolled in the state's voluntary purchase program, and don't assume "chile and pecan country" reputation guarantees a specific parcel will still have usable water rights a decade from now -- this is an active, funded, court-ordered program working through this exact groundwater basin as of 2026.

Right to farm, and the property-tax side of agricultural land

New Mexico's Right to Farm Act (NMSA 1978 §§ 47-9-1 to 7), strengthened by the state legislature in 2016, limits when an established agricultural operation can be treated as a nuisance by a newer neighbor -- and Doña Ana County's UDC specifically exempts uses listed under the Act from certain performance standards that otherwise apply. Practically, that means an existing farm or ranch operation next to land you're buying is unlikely to be something you can force to change through a nuisance claim after the fact, whether the issue is dust, odor, or agricultural equipment noise -- factor that into expectations for any parcel near an active farm.

On the tax side, New Mexico law (NMSA 1978 § 7-36-20) gives agricultural land special valuation status, separately classified as irrigated agricultural land (receiving supplemental water beyond natural rainfall) or dry agricultural land, and a property owner has to affirmatively apply to the County Assessor by the last day of February to claim it for a given tax year. A grazing-valuation claim specifically requires proof that grazing is the land's primary use -- a grazing lease, a personal-property livestock declaration, or similar documentation -- not just that livestock occasionally uses the land. If a parcel you're considering is already enrolled in special valuation, confirm what use classification and documentation the current owner has on file with the Doña Ana County Assessor, since a change in actual use after purchase can trigger reassessment.