Boulder County sets no blanket ban on storing your own RV, trailer, or boat on your private lot, but you cannot live in an RV, and on public roads an RV left over 72 hours is towable as abandoned.
The Boulder County Land Use Code treats recreational vehicles as non-dwellings: they may not be used for habitation on vacant land or during home construction, and camping is limited to 14 days per year. For home occupations in subdivisions, no more than one associated passenger vehicle, light truck, recreational truck, or farm truck may be parked outside. On unincorporated county roads, an RV or trailer left in one spot longer than 72 hours meets the abandoned-vehicle definition in Ordinance 2024-1 and can be ticketed and towed. Inside cities (Boulder, Longmont, Louisville, Lafayette), the city's own RV-storage rules apply instead.
An RV/trailer abandoned on a county road is a civil infraction: $15 first, $30 second, $60 third offense, plus possible tow at owner's cost after 72-hour notice.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Boulder County, CO
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