Caldwell, ID Property Maintenance: Garage Sale Rules (2026)

Unlike some Idaho cities, Caldwell does not appear to maintain a dedicated garage-sale or yard-sale permit ordinance limiting the number of days or events per address. The most concrete rules come from the Idaho State Tax Commission's occasional-sales exemption, which treats a yard sale as "typically a one-weekend event (three days) where you sell your own items, at your own residence," and provides that "you can't have more than two in any calendar year and claim the occasional sales exemption." Residents who exceed two home yard sales in a year may still qualify for the small-seller exemption if gross sales stay under $5,000. The exemption is lost if you run sales for more than a few days, sell somewhere other than your residence, buy items for resale, sell on consignment, or run an organized paid-admission multi-seller event. On the city side, an occasional personal yard sale is not a regulated business, but a continuous or commercial selling operation run from a home would fall under Caldwell's business-license and home-occupation permit requirements administered by Planning and Zoning. Sellers should also keep sale items and signage from creating a nuisance or blocking the public right-of-way, which would fall under the city's nuisance code. For any sign placement or recurring-sale questions, residents should confirm current rules with Caldwell Planning and Zoning.