There’s been some social media discussion regarding when campaign signs can be displayed. I asked the San Bruno City Clerk about it and although there are some likely First Amendment rights to placing the signs, the City Clerk is asking all candidates to voluntarily comply. However candidates are free to do otherwise should they choose.
The City Council has started revising the Municipal Code this year and have updated Sections 1-3. The section pertaining to signs is in Section 12.
According to San Bruno Municipal Code Section 12.104.210 Election signs.
1. In any zoning district.
2. May not be placed or maintained contrary to the provisions of Section 12.104.030 or upon any buildings or in any parks or landscaped areas owned, occupied, or maintained by the city.
B. Time Period of Placement. No election sign pertaining to a candidate or measure shall be placed or maintained more than ninety days before the election to which it pertains. No election sign pertaining to a candidate or measure in a general municipal election or San Bruno Park School District election shall be placed or maintained more than fourteen days after such election, and no election sign pertaining to any other election shall be placed or maintained more than thirty days after the election to which it pertains, except that an election sign need not be removed between the primary and general election, but shall be removed not later than thirty days after the general election.