Bishop, CA Sign Regulations: Political Signs (2026)

Inyo County regulates all signs in the unincorporated area through Title 18 Chapter 18.75 (Signs), whose stated purpose is to control and regulate the construction, location, and maintenance of signs. The chapter sets permitted signs by zone district (Section 18.75.120) and sign-height limits (Section 18.75.110), with administrative review by the Planning Director (Section 18.75.130). The full verbatim text of the political-sign provisions is published in the County's codified Chapter 18.75 on eCode360. Separately, because much of Inyo County fronts U.S. Highway 395 and other state highways, California's State Outdoor Advertising Act governs temporary political signs near those routes. Under Business and Professions Code Section 5405.3, a temporary political sign must: support or oppose a candidate or measure in an upcoming election; be no larger than 32 square feet; be placed no sooner than 90 days before the election and removed within 10 days after; and have a Statement of Responsibility filed with Caltrans identifying who will remove it. Such signs may not be placed within a highway right-of-way or within 660 feet of, and visible from, a classified landscaped freeway. Signs in the right-of-way may be removed by Caltrans at the responsible party's expense. Property owners should follow both Chapter 18.75 (for the zone) and state law (near highways), and confirm specifics with the Inyo County Planning Department.