Before You Build in Las Cruces, NM: Permit & Rule Checklist (2026)

New Mexico has no shared-fence cost law, so each Las Cruces owner pays for their own fence. The city bars building any fence or wall on the property line without written consent from affected neighbors.

Las Cruces enforces New Mexico's residential building code for pools: a barrier at least 48 inches high with self-closing, self-latching gates around every pool, spa, or hot tub, verified by building permit.

Unlike many cities, Las Cruces requires an approved building permit for every fence, wall, and retaining wall. Simple residential fences can use a fast over-the-counter permit that waives plan review.

Las Cruces requires a building permit for any retaining wall, defined as one holding back 4 feet of grade or a surcharge load. Taller walls need engineered drawings and calculations.

Las Cruces caps residential fences at 4 feet in the front-yard setback and 8 feet in side and rear yards; commercial front fences reach 6 feet. Every fence needs a city building permit.

Las Cruces allows wood, wire, steel, brick, block, rock, concrete, and adobe fences, but chain-link is barred along collector and larger roadways, and walls must be consistent in color and material.

Permanent hot tubs and spas need a building permit in Las Cruces, but a spa or hot tub fitted with a listed ASTM F1346 safety cover is exempt from the pool barrier requirement.

Pools in Las Cruces must be enclosed by a barrier at least 48 inches high with no gap a 4-inch sphere can pass. Gates must open outward and be self-closing and self-latching.

Las Cruces requires a building permit for every permanent or in-ground swimming pool and spa. Plans, a compliant barrier, and a final inspection under the New Mexico Residential Code are mandatory before use.

Above-ground pools holding water deeper than 24 inches require the same 48-inch barrier as in-ground pools in Las Cruces. A permanent above-ground pool also needs a building permit.

Beyond the 48-inch barrier, Las Cruces pools must have self-latching gates, alarms on doors with direct pool access, and federally compliant anti-entrapment drain covers under the Virginia Graeme Baker Act.

Converting a garage into living space in Las Cruces requires a building permit and full residential code compliance - egress windows, insulation, alarms, and heating must all be addressed.

Las Cruces allows accessory dwelling units and casitas by right in all residential zones under the Realize Las Cruces Development Code adopted February 18, 2025. A building permit is required to build one.

A tiny home on a permanent foundation is treated as a dwelling or casita in Las Cruces and must meet the building code. Tiny homes on wheels are RVs and cannot be permanent residences on residential lots.

In Las Cruces, a one-story detached storage shed of 120 square feet or less needs no building permit. Larger sheds require a permit, and every shed must meet zoning setbacks.

Carports in Las Cruces require a building permit and must meet the zoning setbacks for their district. Structures must be anchored to resist wind and cannot block drainage or easements.

Open burning in Las Cruces requires a same-day burn permit from any fire station. No permits issue when winds exceed 20 mph, piles are capped at 3 feet wide, and only dry vegetation may burn.

Backyard fire pits and cooking fires need no permit in Las Cruces, but must sit at least 25 feet from structures, stay attended with water on hand, and burn only clean fuel.

Las Cruces limits outdoor watering by address: even addresses water Tuesday, Thursday, Saturday; odd addresses Wednesday, Friday, Sunday; never Monday. From April 1 to September 30, no watering between 10 a.m. and 6 p.m.

Las Cruces homeowners may remove trees on their own property without a permit. The only restriction is on public and street trees, which under Chapter 26 only the city may cut down, remove, or alter.

Las Cruces requires property owners to trim trees over any street or sidewalk to at least eight feet of clearance. Residents may not cut, trim, or remove city trees in public grounds.