Sign Regulations in Caldwell, ID (2026)
5 verified sign regulations for Caldwell, Idaho, sourced directly from the municipal code and official government pages.
Verified from official government sources
Political Signs
Caldwell bans political signs, banners and campaign literature within 100 feet of a polling place entry door on election day and prohibits all political signage on city right of way or city property. Private-property signage has no numeric limit.
Political Signs Near Polls in Caldwell, Idaho
Some RestrictionsCaldwell City Code § 01-07-02
Electioneering will include the posting, use, or distribution of political signs, cards, placards, or literature; including flags, and anything similar that is tangible and designed to call one's attention to a certain candidate and/or proposition. ... ... A. In compliance with Idaho Code Section 18-2318, on the day of any primary, general or special election, there shall be no electioneering "...
Garage Sale Signs
Caldwell limits garage-sale advertising to four temporary signs per sale, each capped at six square feet, and requires every sign to come down within 24 hours of the sale's close. Signs need the property owner's permission and can never go in the public right-of-way, on utility poles, or on street furniture, under Caldwell City Code § 06-15-01(7).
Caldwell, Idaho Garage Sale Sign Rules
Some RestrictionsCaldwell City Code § 06-15-01(7)
(7) Advertising Of Garage, Yard Or Similar Sales: A. No more than four (4) temporary signs per one garage, yard or similar sale shall be installed, erected, posted, or displayed for the purpose of identifying, promoting, advertising, or directing patrons to such garage, yard or similar sale. ... ... C. Any and all temporary signs identifying, promoting, advertising, or directing patrons to a ga...
Digital Billboards
Digital signs in Caldwell's commercial and industrial districts must attach to a permitted monument sign, stay under 25 percent of that sign's face, and clear a special use permit before installation. City Code § 10-02-06-8(2)(B) also requires automatic dimming and limits flashing and full-motion video content.
Caldwell Electronic Message Center Sign Rules
Significant RestrictionsCaldwell City Code § 10-02-06-8(2)(B)
Electronic Message Center (EMC) or Changeable Copy Signs: 1. One (1) electronic message center or changeable copy sign may be permitted only when it is used in conjunction with, and as a part of, a permitted freestanding monument sign. The electronic message center or changeable copy sign portion shall not exceed twenty - five (25) percent of the permitted square footage of the monument sign. S...
Window Signs
Caldwell caps window signage at 25 percent of the window area on each building façade. City Code § 10-02-06-8(2)(F) permits window signs in any window facing a street or alley in commercial and industrial districts, but the quarter-coverage ceiling is framed explicitly as a security measure, keeping sightlines into storefronts open.
Caldwell Window Sign Coverage Limit
Some RestrictionsCaldwell City Code § 10-02-06-8(2)(F)
Window Signs: 1. Window signs are permitted in any window with street or alley frontage. Window signs shall not occupy more than twenty-five (25) percent of the window area on each building façade for security purposes.
Freeway-Facing Signs
Caldwell allows one freestanding freeway-oriented billboard per qualifying lot, but only within 500 feet of the I-84 Interstate on commercial, industrial, public, semi-public or institutional land. City Code § 10-02-06-8(2)(C) caps each billboard at 672 square feet and 60 feet tall, with a 30-foot setback and 1,320-foot spacing between signs.
Caldwell Freeway-Oriented Billboard Standards
Some RestrictionsCaldwell City Code § 10-02-06-8(2)(C)
Freestanding Freeway-Oriented Pole Signs (Billboards): 1. One (1) freestanding freeway-oriented pole sign may be permitted only on commercial, industrial, public, semi-public or institutional lots or parcels located within five hundred feet (500') of the I-84 Interstate. 2. Freestanding freeway-oriented pole signs shall be set back at least thirty feet (30') from all property lines and shall ha...
Looking for Canyon County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Caldwell city rules.
Sign Regulations in Canyon County →