Shed permit rules in Douglas County, CO — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Douglas County requires a building permit for a detached shed, barn, or storage structure and requires it to meet zoning setbacks. Pre-approved foundation designs cover one-story sheds up to a 1,000 sq. ft. slab or a 3,000 sq. ft. pole barn.
The Douglas County Building Division requires a building permit application, scaled construction plans, and a site plan showing distances to property lines for a detached shed or storage building. In residential zones an accessory building must sit at least 15 feet from side and rear lot lines and may not exceed 20 feet in height. In the Suburban Residential district a lot under one acre may have one detached garage of no more than 1,000 sq. ft. Zoning rules apply regardless of shed size, and a DESC drainage submittal is required.
Building without a required permit can trigger stop-work orders, double permit fees, and orders to remove or relocate a non-conforming structure.
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