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

Signage in unincorporated Plumas County is governed by Sec. 9-2.416 of the zoning code's General Requirements. The general standards limit total sign area and provide that a sign may not exceed the maximum building height for the zone in which it is located, must be maintained in good repair, and is prohibited from being off-premises, having visible moving parts, or using flashing, intermittent, or changing illumination. For home-based work, the code's 'home business and home industry signs' provision allows one sign for each permitted home business or home industry, and that sign shall not exceed an area of 6 square feet. Separately, a 'nameplate' identifying the occupant of a dwelling is allowed at one per permitted dwelling unit and is also limited to 6 square feet. A 'home business sign' is defined (Sec. 9-2.288) as a permanent advertisement of a permitted home business or home industry. Because a 'limited home business' is defined as having no exterior evidence of business activity, owners relying on the by-right limited category should be cautious about adding a sign, which is more consistent with the full 'home business' category. The Planning Department issues sign permits where required (a sign permit application is available), and signs must also meet placement and setback rules.