Doña Ana County, NM Outdoor Lighting: Dark Sky Rules (2026)

' Subsection B(1)(a) requires that all lighting installations be designed and installed to be fully shielded, and sets a maximum lamp wattage of 250 watts HID, roughly 1,600 lumens, for commercial fixtures. Residential lighting under B(1)(b) must be shielded so that the lamp or its image is not directly visible from outside the property line. The code exempts six categories from full-shielding: pool and water-feature lighting governed by the National Electrical Code, exit signs and illumination required by the International Building Code, stair and ramp lighting required by that code, holiday and temporary lighting used less than 30 days a year, athletic field lighting while the field is in active use, and low-voltage landscape lighting, which must still be shielded to cut glare and light trespass. 11, Parkway Assemblies.