Zoning & Navajo County Agricultural Rules in White Mountains

Buyer's Guides › Zoning & Navajo County Agricultural Rules

White Mountains sits entirely within Navajo County, but the decisive split for horse buyers is jurisdictional: a parcel is either inside the Town of White Mountains, which has its own zoning ordinance, or in unincorporated Navajo County, which follows County rules. The 85331 zip code crosses the Town of White Mountains, Carefree, Phoenix, Scottsdale, and unincorporated county land, so a "White Mountains" mailing address tells you nothing about land-use jurisdiction. Confirm jurisdiction first, from the assessor parcel data and the official zoning map — not the listing or the address.

Town of White Mountains — Navajo County Agricultural Zoning

Many of the Town's residential areas are zoned Navajo County Agricultural. Under the Town's residential ordinance, ranching and the keeping of horses or other livestock is a right on any parcel of at least two contiguous acres under single ownership in a A-General zone. Private ranch uses tied to a residence — barns, corrals, horse shades, and similar accessory structures — are restricted to A-General zones, and listed private ranch uses include boarding, breeding, training, lessons, the sale of ranch animals, and 4-H or youth activities. Smaller DR, R, and MR parcels may be limited to small ranch animals rather than horses, so verify the parcel's designation and acreage against your intended use.

Several DR rules shape how usable a parcel really is. Fences, including corral fences, must be set back at least 12 feet from property lines, and fences over four feet typically require a building permit; no fence, wall, or gate may be built without zoning clearance. Outdoor arenas, stables, and corrals cannot be illuminated after 10:30 p.m., and lighting standards for those areas are capped in height. Most permanent structures, including barns and covered arenas, require building permits and must meet setbacks and height limits. Confirm permitted and accessory uses, animal limits, and any hillside, floodplain, or scenic-corridor overlays with the Town Planning Department before you write.

Unincorporated Navajo County

Parcels outside the Town limits with a White Mountains mailing address are often in unincorporated Navajo County and follow County zoning rather than the Town ordinance. County rural and agricultural designations commonly permit private horse-keeping as an accessory use, but the exact animal limits, setbacks, and commercial-use rules differ from the Town code. Pull the official County zoning designation and the full code chapter for the parcel, and confirm permitted and accessory uses with Navajo County Planning and Development. If you intend to board, train, or give lessons commercially, you may need a Conditional Use Permit or similar approval.

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Water, Wells and Septic

Zoning is only half the picture. In White Mountains the Town water system is served by CAP water, the Concho Valley system relies on groundwater wells with supplemental CAP water, and many residents use private wells. If a new well is needed, the Arizona Department of Water Resources requires a Notice of Intent to Drill before drilling or modifying a well — confirm permit status, depth, yield, and allowed uses with ADWR. Sewer is not available everywhere, so many properties use on-site septic; in Navajo County a septic system must be inspected within six months before transfer, with a Notice of Transfer filed within 15 days after closing.

Agricultural Tax Classification

Navajo County offers an agricultural classification that can reduce the assessed value used for property tax calculation, sometimes producing meaningful annual savings on a working horse property. Qualification requires demonstrating bona fide agricultural use; horses kept for sale, breeding, or a commercial operation generally qualify more straightforwardly than horses kept solely for personal recreation. On any target property, confirm whether it currently carries the classification, whether your intended use will maintain it, and whether any reassessment is pending. An existing classification can lapse if the use changes — confirm current status with the County Assessor.

HOA and CC&R Restrictions

Zoning sets the floor for what is permitted, but HOA declarations and CC&Rs can be stricter. A parcel whose zoning allows horses may sit in a subdivision whose recorded declaration limits or prohibits them, or restricts trailers, fencing, lighting, or outbuildings. These restrictions live in the recorded CC&Rs, not the zoning code. A title search surfaces them; read them before making an offer on any platted subdivision or planned community.

Key Takeaways

Confirm jurisdiction first — Town of White Mountains vs. unincorporated Navajo County — from assessor data and the zoning map, not the address.
In Town A-General zones, horse-keeping is a right on two-plus contiguous acres; corral fences set back 12 feet; arena lighting off after 10:30 p.m.
Outside Town limits, County zoning governs — pull the exact designation and confirm horse uses with Navajo County.
Verify well permits with ADWR and septic transfer requirements with Navajo County before closing.
HOA CC&Rs can restrict horses more severely than zoning — read them before you write.