Glenn County, CA Home Business: Signage Rules (2026)

Sign rights for a home-based business are folded into the same permit standards that govern the rest of a home occupation under Section 15.78.020. The rule is short and absolute: "One on-site sign is permitted advertising the home occupation, not to exceed two (2) square feet in total aggregate area. No lighted signs are allowed." That two-square-foot limit is a hard ceiling on the sign's total area, not a per-face allowance, and it applies whether the home occupation sits in one of the residential zones (RZ, RE, RE-NW, R1, RM) or one of the agricultural zones (FA, AP, AE, AT) where home occupations are permitted.

The same chapter requires that the home occupation itself stay screened from public view and that the structure housing it not be "reasonably recognized as serving a nonresidential use," so the two-square-foot sign cap works alongside those visibility rules rather than as a standalone sign ordinance. Because the standard sits inside the home occupation permit requirements rather than the county's general sign regulations, a sign that exceeds two square feet or that lights up puts the whole home occupation permit at risk, not just the sign; the planning authority reviews the sign as one of the conditions of approval it can revisit any time it inspects the premises under Section 15.78.020's inspection clause.