Honolulu County, HI Fence Regulations: Height Limits (2026)
Key Facts
- General fence height cap
- 6 feet in required yards
- Corner visibility triangle
- 3 feet within 30 feet
- Utility fence height
- Up to 8-9 feet
- Front yard, business/industrial
- Fences prohibited
Summary
Fences and walls in required yards across Oahu are capped at 6 feet, with front-yard fences banned in business and industrial districts and a 3-foot limit inside corner-lot visibility triangles.
Other than retaining walls, walls and fences up to a height of 6 feet may project into or enclose any part of a required yard; provided that: (1) They shall be prohibited in front yards in business, business mixed-use, industrial, and industrial-commercial mixed-use districts; (2) Walls and fences constructed by public utilities may be up to 8 feet in height, and may be topped with security wire to a total height of 9 feet.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-10: Supplement 10, 12-2025 Ordinance No. 25-40 through Ordinance No. 25-56).
Full Breakdown
The Land Use Ordinance caps fences and walls at 6 feet within any required yard on Oahu, though front-yard fences are barred entirely in business, business mixed-use, industrial, and industrial-commercial mixed-use districts under ROH § 21-4.30(c). Public utility fences may reach 8 feet (9 with security wire on top), and fences on agriculturally dedicated land may reach 10 feet. Separately, ROH § 15-24.6 limits any fence, wall, or hedge to 3 feet within the 30-foot visibility triangle at a street corner unless the director of transportation services finds it doesn't obstruct sight lines.
Violations & Fines
The chief of police must serve notice on a property owner to remove a corner-triangle obstruction within one week; oversized yard fences are subject to code enforcement and removal orders.
Frequently Asked Questions
How tall can my fence be in Honolulu County?
Are there height limits for fences near street corners?
Sources & Official References
Other rules in Honolulu County
How Honolulu County compares: Cities That Allow the Tallest Residential Fences·Compare Honolulu County to another location·View the Hawaii fence regulations overview
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