2 county-level rules, plus city-specific rules for 2 cities in Lehigh County, Pennsylvania.
Verified from official government sources
Allentown treats political signs favorably: they are non-illuminated temporary signs but, unlike other event signs, may be located anywhere, including residential lots, and are exempt from the 45-day-before, 7-day-after, and 52-day display limits that apply to other temporary signs.
Allentown Zoning Ordinance §1319.03.K
Non-illuminated temporary or portable signs, or banners announcing or advertising any political... campaign or event are permitted provided: 1. such signs shall only be permitted on a lot with a principal non-residential use, or on a vacant lot in a non-residential zoning district, except for political signs which may be located anywhere in accord with the remainder of this section.
Allentown limits yard/garage sales to four per year over no more than three consecutive daylight days. A sale sign may not be displayed more than 24 hours before the sale starts and must be removed immediately when the sale ends.
Allentown Zoning Ordinance §1311.15
No sign or other form of advertisement shall be displayed for more than twenty-four (24) hours prior to the commencement of such a sale and shall be removed immediately upon the conclusion of the sale.
2 cities in Lehigh County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
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