Sign Regulations in Walla Walla County, WA (2026)
3 rules for unincorporated Walla Walla County, Washington.
Verified from official government sources
Garage Sale Signs
A garage sale or yard sale sign in unincorporated Walla Walla County is a temporary-event sign under WWCC § 17.28.020: allowed for up to three days without paperwork, or longer with documentation, but never more than thirty days total in a year. It still cannot go on a utility pole, tree, or public right-of-way without approval.
Garage Sale Sign Rules, Walla Walla County
Light RestrictionsWalla Walla County Code § 17.28.020
Signage for temporary events is allowed for a period not to exceed three days unless documentation is provided that the temporary event exceeds three days. In no case shall temporary signage be allowed for a period exceeding thirty days annually.
Digital Billboards
Electronic message center signs in unincorporated Walla Walla County are capped at one double-faced sign per street frontage, up to 150 square feet per face, under WWCC § 17.28.100. They must go dark near residential zones from 10 p.m. to 6 a.m., change messages no faster than every eight seconds, and self-dim with an automatic malfunction shutoff.
Digital Sign Rules, Walla Walla County
Some RestrictionsWalla Walla County Code § 17.28.100
A.Electronic message center signs shall comply with this chapter.B.Size. One double-faced electronic message sign is permitted per street frontage and shall be one-half square foot per foot of street frontage, up to a maximum of one hundred fifty square feet per face.C.Setbacks. Signs shall meet all setback and sight distance requirements as required in section 17.25.050.D.Signs located adjacen...
Window Signs
Unincorporated Walla Walla County has no window-sign coverage cap, but WWCC § 17.28.090.A.10 bans any sign on a door, window or fire escape that restricts free ingress or egress. Signs are otherwise allowed on storefronts in every zoning district except residential districts under § 17.28.010.C.
Window Sign Egress Rule, Walla Walla County
Light RestrictionsWalla Walla County Code § 17.28.090.A.10
A.The following signs are prohibited: ... 10.Signs on doors, windows, or fire escapes that restrict free ingress or egress; ...
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