Sign Regulations in Riverside County, CA (2026)

5 county-level rules, plus city-specific rules for 6 cities in Riverside County, California.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Riverside County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Political Signs

In unincorporated Riverside County, political/non-commercial signs are temporary signs under Ordinance No. 806 (Title 17, Chapter 17.254). During an election period they may be up to 32 sq ft and 6 feet tall, with an 80 sq ft per-lot aggregate cap, and may sit in the road right-of-way; they must come down within 10 days after the election.

Riverside County Political & Non-Commercial Sign Rules

Some Restrictions

Cal. Civ. Code Sec. 4710 (Display of Noncommercial Signs)

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...

Full ordinance details →Official source ↗

Garage Sale Signs

Unincorporated Riverside County allows one unlighted garage sale sign per property, capped at four square feet, posted only on the sale premises, never in the public right-of-way, for up to five days before the sale.

Riverside County Garage Sale Sign Rules

Some Restrictions

Riverside County Code § 5.28.060

No sign advertising a garage sale shall be posted, erected or maintained except on the premises where such sale is to be held. No more than one unlighted sign advertising a garage sale may be posted, erected or maintained on the premises... provided, however, that no such sign may be posted, erected or maintained on the public right-of-way. No sign posted, erected or maintained as provided for ...

Full ordinance details →Official source ↗

Holiday Displays

Inside the Bermuda Dunes Neighborhood Preservation Overlay in unincorporated Riverside County, a holiday display such as Christmas lights or Halloween decorations can stay up for a maximum of 60 consecutive days under County Code Section 17.292.040(6), and it cannot block pedestrian or vehicle traffic on any street, sidewalk or right-of-way.

Riverside County Holiday Display 60-Day Cap

Light Restrictions

Riverside County Code § 17.292.040(6)

6.Temporary Exterior Display and Holiday Display.a.Any temporary exterior display or holiday display shall not impede vehicular or pedestrian traffic on any street, sidewalk, or right-of-way either visually or physically.b.Any temporary exterior display or holiday display shall be allowed for a period not to exceed sixty (60) consecutive days.c.Any and all applicable county, state or other perm...

Full ordinance details →Official source ↗

Digital Billboards

Riverside County bans flashing, intermittent, or moving-light electronic message boards on outdoor advertising displays in the unincorporated area, except time-and-temperature displays held for at least 30 seconds.

Riverside County Digital Billboard Message Restrictions

Significant Restrictions

Riverside County Code § 17.252.030(B)(10)

No outdoor advertising display shall move or rotate, to display any moving and/or rotating parts. No propellers, flags, or other noise creating devices, and no architectural embellishments which utilize mechanical or natural forces for motion, shall be permitted. Use of daylight reflective materials or electronic message boards using flashing, intermittent or moving light or lights is prohibite...

Full ordinance details →Official source ↗

Freeway-Facing Signs

Billboards oriented toward a freeway or highway in unincorporated Riverside County are capped at 25 feet above the adjacent roadbed and are barred within 660 feet of a primary highway right-of-way without a state Outdoor Advertising Permit. County Code Section 17.252.030 also limits outdoor advertising displays to four zones and requires a county permit before one goes up.

Riverside County Freeway Billboard Standards

Significant Restrictions

Riverside County Code § 17.252.030(B)(2)-(4)

2.Zoning. Outdoor advertising displays are permitted only in the C-1/C-P, M-SC, M-M and M-H zones; provided, that the display meets all of the other requirements of the zoning classification and this chapter. Outdoor advertising displays are expressly prohibited in all other zones.3.Height. The maximum height of an outdoor advertising display shall not exceed a height of twenty-five (25) feet f...

Full ordinance details →Official source ↗