Prescott Valley, AZ Outdoor Lighting: Light Trespass & Shielding (2026)

Section 13-12-060 of the Prescott Valley Town Code is the light trespass standard, and sections 13-12-040(H) and (I) make both building-mounted and freestanding fixtures subject to it. Subsection A requires every fixture to be fully shielded and installed so the light source and direct glare are not visible from adjoining residential uses. Subsection B sets two numeric limits: one horizontal foot candle at any property line, and a total of 0.25 foot-candles at a height of six feet at a residential property line. Section 13-12-030 defines horizontal foot-candle as illuminance measured by a light meter at the adjacent grade of the fixture or the building it is attached to, unless otherwise specified.

Subsection C bars adjustable wall packs and fixtures from being set above a horizontal plane and requires them to be fully shielded. Subsection D carves out exemptions. Residential fixtures emitting no more than 2,000 lumens, as described in section 13-12-070(E), are exempt from the trespass shielding rule but remain subject to the rest of the Article. Incandescent spot lights of no more than 4,000 lumens in a shielded fixture are exempt only when all six conditions are met: they illuminate a commercial use, serve landscape or building accent, sit at ground level, point away from roadways and residential property, aim at not more than a 45-degree angle above horizontal, and are spaced at not more than one per 30 feet of building wall face or one per monument sign face.

Section 13-12-070(E)(4) repeats the 0.25 foot-candle limit at an adjoining residential property line for residential fixtures, with an exception for frosted lamps under 1,000 lumens installed a minimum of 30 feet apart on a permitted residence or accessory structure. Section 13-12-020(C) also makes frosted lamps of not more than 1,000 lumens subject to section 13-12-060.