Fence Regulations in Boulder, CO (2026)
6 verified fence regulations for Boulder, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
Boulder limits residential fences: typically 6 feet in rear/side, 4 feet in front yard. Corner lots have visibility requirements.
Boulder Fence Height Limits
Some RestrictionsPermit Requirements
Standard fences under 6 to 8 feet typically don’t require permits in Boulder. Taller and masonry fences may need building permits.
Boulder Fence Permit Requirements
Some RestrictionsNeighbor Fence Rules
Colorado has no shared fence cost statute. Each property owner is responsible for their own fence. No equivalent to California’s Good Neighbor Fence Act.
Boulder Neighbor Fence Rules
Few RestrictionsRetaining Walls
Boulder requires permits for retaining walls above a certain height, typically 4 feet. Engineering review may be required for taller walls.
Boulder Retaining Wall Regulations
Some RestrictionsPool Barriers
Boulder requires pool barriers meeting safety codes to prevent drowning. Fences must be at least 4 to 5 feet tall with self-closing, self-latching gates.
Boulder Pool Barrier & Fencing Requirements
Heavy RestrictionsMaterial Restrictions
Boulder regulates fence materials by zone. Wood, vinyl, wrought iron, and chain-link common. HOAs frequently impose stricter material requirements.
Boulder Fence Material Rules
Some RestrictionsC.R.S. Sec. 35-46-101 (Fences and Enclosures - Definition of Lawful Fence)
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 the fence, or any other fence of like efficiency. Railroad right-of-w...
Looking for Boulder County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Boulder city rules.
Fence Regulations in Boulder County →