Sign Regulations in Santa Clara County, CA (2026)

Cal. Civ. Code § 4710

(a) The governing documents may not prohibit posting or displaying of noncommercial signs, posters, flags, or banners on or in a member's separate interest, except as required for the protection of public health or safety or if the posting or display would violate a local, state, or federal law. (b) For purposes of this section, a noncommercial sign, poster, flag, or banner may be made of paper...

Santa Clara County Zoning Ordinance § 4.40.040

A.Continuous lighting. Unless otherwise expressly provided in this section, signs may be illuminated only with continuous (non-blinking) lighting.B.Allowed lighting. Except as provided for fin signs in Section 4.40.050(F), signs may be illuminated only with:1.Neon tube lighting, if fully contained within a cabinet covered with a clear glass or plastic face, or if comprised of individual pan cha...

Santa Clara County Zoning Ordinance § 4.40.050(H)

H.Window signs. Window signs may be allowed and shall not reduce otherwise allowed signage. They shall comply with all of the following provisions:1.Window signs must comply with all of the following:a.The total aggregate sign area of permanent and temporary signs shall not exceed 25 percent of the window frame area;b.The sign is not animated; andc.Internal displays of stock-in-trade are consid...