Neither Douglas County nor Castle Rock publishes a specific residential garage-sale permit ordinance, so occasional home sales are generally allowed. The main limits come from HOA covenants and temporary-sign rules restricting where and how long you can post signs.
Douglas County and Castle Rock do not require a permit for an occasional residential garage or yard sale, and no county ordinance caps the number of sale days for homeowners. Practical limits come from two places: HOA rules in communities like Highlands Ranch and The Meadows, which may restrict frequency or duration; and municipal sign regulations, which govern temporary garage-sale signs, including placement off the public right-of-way and prompt removal after the sale. Running a continuous retail operation from a home, versus an occasional sale, can trigger home-occupation and zoning rules instead.
Enforcement typically targets illegally placed signs (removal by the Town) or HOA covenant breaches; a persistent sales operation may draw a zoning/home-occupation citation.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Douglas County, CO
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See how Douglas County's garage sale rules rules stack up against other locations.
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