El Cajon, CA Sign Regulations: Window Signs (2026)

140 of the El Cajon Municipal Code, 'Banners and other temporary advertising displays,' devotes subsection C to noncommercial temporary signs, permitted in addition to the noncommercial signage already allowed under the chapter's message substitution policy. ' The limit is measured against the property's total window space, not a single pane, and applies citywide regardless of underlying zoning, from single-family residential lots to commercial corridors. The same subsection groups window signs with truck- and trailer-mounted signs, yard signs in residential zones (capped at 24 square feet and five feet in height), and signs on privately owned utility poles, all of which require the property owner's consent.

Under item C(5), any noncommercial temporary sign tied to a specific event or dated occurrence, such as an election, must come down within 30 days after the event passes; if the owner does not remove it, the property owner is deemed to grant the city permission to enter and remove the sign without damaging the property or entering areas where there is a reasonable expectation of privacy. 050 covers signs painted, installed, or illuminated on either side of a window, including those mounted less than three feet behind the glass and facing public view. 070.