In unincorporated Douglas County a building permit is required for any fence or wall taller than 6 feet, and for any retaining wall taller than 4 feet. Fences at or below those heights generally do not require a county permit.
Under the Zoning Resolution, a building permit is triggered once a fence or freestanding wall exceeds 6 feet in height, or a retaining wall exceeds 4 feet, or whenever the adopted Building Code otherwise requires one. Fences may be placed within setbacks on private land but never in the public right-of-way. Permits are handled through Douglas County Building Division. Towns run their own permitting: Castle Rock requires most fence permits through its online portal, processed in about 5 to 10 business days. Always confirm HOA/metro-district approval separately, as covenant review is independent of the county permit.
Building without a required permit is a code violation; the county can require a permit after the fact, order corrections, or removal of noncompliant work.
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 permit requirements rules stack up against other locations.
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