Fence Regulations in Castle Rock, CO (2026)
7 verified fence regulations for Castle Rock, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
Fences up to 72 inches (6 feet) are allowed anywhere on your lot except in the front yard setback, where the maximum height is 48 inches (4 feet). Corner-lot sight triangles limit height further.
Castle Rock fence height limits
Some RestrictionsCRMC 17.52.130(A)
Fences up to seventy-two inches in height are permitted anywhere on the zone lot except within the front yard setback, in which case the maximum allowable height is forty-eight inches.
Permit Requirements
Standard residential fences meeting the height limits generally do not need a town permit. Castle Rock follows the 2024 International Residential Code, which exempts fences 7 feet or lower from a building permit; taller fences and walls require review.
Do you need a fence permit in Castle Rock?
Some RestrictionsNeighbor Fence Rules
Castle Rock's code sets fence height and placement, but cost-sharing between neighbors is governed by Colorado's Fence Law. Confirm the exact boundary line before building, since a misplaced fence can create disputes or encroachment.
Shared and boundary fences in Castle Rock
Some RestrictionsRetaining Walls
Fence height is measured from the lowest grade, so retaining walls stacked with a fence are counted together. Under the adopted 2024 IRC, retaining walls over 4 feet (bottom of footing to top) or supporting a surcharge require a building permit and engineering.
Retaining wall rules in Castle Rock
Some RestrictionsFence Requirements
Beyond height, Castle Rock requires buffer fencing where commercial or industrial uses abut homes, and screening fences to conceal outdoor storage. Front-yard fences should be at least 50% open, and sight triangles must stay clear.
Fence requirements and screening in Castle Rock
Some RestrictionsCRMC 17.52.140
Where a commercial or industrial use abuts a legal, conforming residential use located within a residential zone district, a physical barrier in the form of an opaque fence, wall or coniferous landscape screen shall be provided to adequately buffer the residential use.
Material Restrictions
Barbed wire and electrified fences are banned in every residential zone district in Castle Rock. Barbed wire is only allowed as up to four strands atop security fencing in industrial zones. Non-durable materials like chicken wire are discouraged.
Prohibited fence materials in Castle Rock
Some RestrictionsCRMC 17.52.130(B), (C)
Barbed wire fencing is not allowed to be used within any zone district within the Town, except that up to four strands may be allowed on the top of security fencing in Industrial Zoning Districts. Electrified fences are not allowed to be used within any Zoning District within the Town.
Approved Materials
Castle Rock allows common durable fence materials such as cedar, redwood, vinyl, composite, and wrought iron. Front-yard fences should be open styles (picket, split-rail, wrought iron). Barbed wire and electric fencing are prohibited in residential zones.
Allowed fence materials in Castle Rock
Some RestrictionsLooking for Douglas County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Castle Rock city rules.
Fence Regulations in Douglas County →