6 county-level rules, plus city-specific rules for 4 cities in Arapahoe County, Colorado.
Verified from official government sources
Arapahoe County Land Development Code Section 12-800 regulates fence heights in unincorporated areas. Front yard fences are limited to 3 feet, side and rear yard fences to 6 feet, and commercial/industrial zone fences to 8 feet. Agricultural land is exempt.
Fence permits are required in unincorporated Arapahoe County under LDC Section 12-800. Permit fees are set by the Board of County Commissioners to cover inspection and administration costs. Agricultural fences on qualifying land are generally exempt.
Colorado has no shared-cost fence statute. Arapahoe County LDC Section 12-800 requires side yard fences to not extend past the neighbor's front building line. Colorado CRS 35-46-101 applies only to agricultural fencing between adjacent landowners.
Arapahoe County Building Division requires a permit for retaining walls over 4 feet measured from the bottom of footing to top of wall, or for any wall supporting a surcharge. Engineered plans stamped by a Colorado-licensed PE are required for walls over 4 feet.
Arapahoe County requires permitted pool barriers per 2018 IRC Appendix G and ISPSC. Minimum barrier height 48 inches, self-closing/self-latching gates opening outward, latch height 54 inches, and max 4-inch opening through any pattern. Applies to all pools over 24 inches deep.
Arapahoe County Land Development Code §5-2 regulates fence materials by zoning district. Wood, vinyl, wrought iron, chain-link, and tubular steel are generally permitted. Barbed wire is restricted to agricultural and industrial zones. HOAs in Centennial, Aurora master-planned communities, and Cherry Hills Village commonly impose stricter material standards.
C.R.S. § 35-46-101
Overview of Open Range and Fence Out Concepts", see 43 Colo. Law. 29 (March 2014). 35-46-101. Definitions. As used in this article, unless the context otherwise requires: (1) "Lawful fence" is a well-constructed three barbed wire fence with substantial posts set at a distance of approximately twenty feet apart, and sufficient to turn ordinary horses and cattle, with all gates equally as good as...
4 cities in Arapahoe County have their own fence regulations rules. Each link goes to that city's dedicated page with code citations.
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