Yorba Linda, CA Home Business: Signage Rules (2026)

Yorba Linda Municipal Code Section 18.20.100.C states that a home occupation may not be apparent beyond the boundaries of the site, with the sole exception of a nameplate permitted under Chapter 18.24. Section 18.24.140.A, in the residential-zone signage article, fixes the size of that allowance precisely: a single-family dwelling unit is permitted one unlighted nameplate not exceeding one square foot in area, and on a site with more than one dwelling unit, nameplates may not be combined into a larger sign. This one-square-foot cap is far smaller than the signage allowed to other residential uses in the same article; Section 18.24.140.B permits multi-family dwellings, apartment developments, boarding or rooming houses and dormitories an indirectly lighted or unlighted identification sign of up to 12 square feet, with freestanding versions capped at six feet in height, and Section 18.24.150 allows agricultural uses a six-square-foot, six-foot-high sign.

Because the nameplate must be unlighted, illuminated signage of any kind, including a lit address sign or business placard, is not permitted at a home occupation. Any sign advertising the nature of the home business, its hours, a logo, or directing customers would exceed both the one-square-foot area cap and the general prohibition in Section 18.20.100.C against the home occupation being apparent beyond the site, since a business-identifying sign is precisely the kind of external evidence that section forecloses.