Outdoor Lighting in Santa Clarita, CA

If you live in Santa Clarita or are thinking about moving there, outdoor lighting are one of those things you probably won't think about until they affect you directly. Santa Clarita has 3 specific rules on the books covering different aspects of outdoor lighting, and some of them might surprise you.

Billboard Lighting

Santa Clarita caps digital billboard brightness at 0.3 foot candles above ambient light measured from 250 feet away, day or night. Nighttime output on top of that may not exceed 500 nits, rising to a 7,500-nit ceiling at all other times.

Key details: Ambient-light cap: 0.3 foot candles above ambient, from 250 ft. Nighttime nit ceiling: 500 nits, sunset to sunrise. Daytime/other-hours ceiling: 7,500 nits. Applies within: BR overlay zone along I-5/SR-14 only.

A digital billboard exceeding the 0.3 foot-candle, 500-nit nighttime, or 7,500-nit daytime ceilings breaches the conditions of its billboard reduction and relocation agreement, exposing the operator to agreement default remedies plus the City's standard code enforcement process, including a correction notice from the Planning Division, an order to power down or dim the display, and civil penalties under the Municipal Code's general enforcement chapter for continued noncompliance.

Dark Sky Rules

New and replacement outdoor lighting in Santa Clarita must be directed downward with a cut-off design so the bulb or lens stays hidden below the fixture housing, under UDC § 17.51.050. Commercial, industrial, and mixed-use lighting must also shut off by 10 p.m. (or an hour after closing) unless it runs on a timer, motion sensor, or 50% dimmer.

Key details: Shielding standard: Cut-off design, directed downward. Commercial curfew: Off by 10 p.m. or 1 hr post-close. Curfew alternative: Timer, motion sensor, or 50% dimmer. Prohibited fixtures: Mercury vapor lamps, lasers, drop-down lenses. Relief process: Minor Use Permit, §17.24.120.

Installing or continuing to operate outdoor lighting that isn't shielded and cut-off, that runs past the required commercial curfew without a timer, sensor, or dimmer, or that uses a prohibited fixture like a mercury vapor lamp or searchlight is a violation of § 17.51.050 enforceable through the Community Development Department's permit and code-compliance process; the Director can require re-aiming, re-lamping, or removal. An uncorrected violation is also a public nuisance under Municipal Code § 1.01.210, subject to summary abatement or a cost-recovery civil action under § 1.01.220.

Light Trespass & Shielding

Outdoor lighting in Santa Clarita cannot spill onto a neighbor's property: UDC § 17.51.050(D)(1)(b) requires every fixture to be 'directed downward to prevent off-site glare,' and a related standard bars lighting that disturbs the peace or comfort of adjoining uses unless it is screened or shielded from surrounding properties and streets.

Key details: Core rule: No illumination of other properties. Direction required: Downward-directed to prevent off-site glare. Related standard: Screening from adjacent uses, §(D)(1)(c). Relief process: Minor Use Permit, §17.24.120. Section: UDC §17.51.050(D)(1)(b).

A fixture that illuminates a neighboring property or creates off-site glare violates § 17.51.050(D)(1)(b) even if it otherwise meets the cut-off shielding standard, and the Director can require the owner to re-aim, add shielding, or lower the fixture. Because outdoor lighting standards are enforced through the Unified Development Code, an uncorrected light-trespass violation is also a public nuisance under Municipal Code § 1.01.210, letting the City summarily abate it or recover abatement costs and attorneys' fees in a civil action under § 1.01.220.

The Bottom Line

Santa Clarita's outdoor lighting rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Santa Clarita is broadly strict or permissive.

This guide is based on Santa Clarita's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.