Thousand Oaks, CA Outdoor Lighting: Billboard Lighting (2026)
Key Facts
- Setback trigger
- Within 75 feet of a residential district with existing homes
- Max brightness (unlabeled setback exception)
- 450 foot-lamberts
- Measurement method
- Approved light-metering system, taken at the light source, other lights off
- Related citywide bans
- No flashing/animated/revolving signs (§ 9-4.2309(a)); no roof signs in any zone (§ 9-4.2309(i))
Summary
Thousand Oaks keeps illuminated signs away from homes: an illuminated sign can't be erected within 75 feet of a residential district that has homes on it unless the sign carries a label certifying its brightness doesn't exceed 450 foot-lamberts, measured directly off the light source with other nearby lighting turned off.
No illuminated sign shall be erected closer than seventy-five (75') feet to any residential land use district on which there exists structures used for residential purposes unless such illuminated sign shall have labeled thereon that the illumination factor does not exceed four hundred fifty (450') foot lamberts measured by an approved light metering system. Such measurements shall be taken directly upon the surface of the light source and when all other external light sources in the same general vicinity are disconnected.
(s) Each application for a sign permit shall be submitted to the Community Development Director to ascertain that the sign conforms with the provisions of this article and will not adversely affect adjacent property values or the public health, safety, or welfare. If the Community Development Director finds that the sign so conforms and that there will be no such adverse effects, he shall authorize the issuance of a permit. If he fails to issue the permit within ten (10) days following the filing of the application, he shall schedule the application for a public hearing and processing pursuant to the provisions and procedures set forth in this chapter.
(t) Temporary vehicle signs are prohibited, except for permanently affixed signage such as painted on signs which do not violate the Vehicle Code or render the vehicle unsafe to drive.
(u) Scenic highway restrictions along Route 23 and Route 101 Freeways shall be as follows:
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-78: 2026 S-78 Supplement contains: Current city legislation passed through March 31, 2026).
Full Breakdown
This is a brightness-labeling requirement rather than an outright ban: a business can still put an illuminated sign within 75 feet of a residential district, but only if it is physically labeled with a certified maximum brightness of 450 foot-lamberts, verified with an approved light-metering system under controlled conditions (measured at the light source with other nearby lights off). Separately, § 9-4.2309(a) bars flashing, animated, or revolving signs citywide except for public service time-and-temperature displays, and § 9-4.2309(i) prohibits roof signs in any zone -- both relevant guardrails on how bright or attention-grabbing commercial signage near homes can be.
Violations & Fines
An illuminated sign placed within 75 feet of a residential district without the required foot-lambert labeling is a violation of the sign article and is treated as a public nuisance subject to City abatement under § 9-4.2304(e), with removal costs billable to the sign owner if the City has to act.
Frequently Asked Questions
Can a business put a lit sign right next to my house in Thousand Oaks?
Are flashing or animated business signs allowed near homes?
Sources & Official References
Other rules in Thousand Oaks
California rules heatmap·Compare Thousand Oaks to another location·View the California outdoor lighting overview
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Billboard Lighting in Nearby Cities
How other cities in Ventura County handle billboard lighting.