Height Limits: Honolulu vs Mililani Mauka
How do height limits rules compare between Honolulu, HI and Mililani Mauka, HI?
Honolulu and Mililani Mauka have similar restriction levels.
Honolulu, HI
Honolulu County
Honolulu's Land Use Ordinance limits residential fences to 6 feet in side and rear yards and 4 feet in front yards. Fences over 6 feet require a Department of Planning and Permitting building permit.
View full Honolulu rules →Mililani Mauka, HI
Honolulu County
Mililani Mauka fences follow ROH Sec. 21-4.60, which triggers added setback or landscaping rules once a front-yard fence, wall, or hedge exceeds 36 inches in height.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | Honolulu | Mililani Mauka |
|---|---|---|
| Side/rear yard max height | 6 feet (no permit) | - |
| Front yard max height | 4 feet residential | - |
| Permit-free threshold | 30 inches or under | - |
| Permit required above | 6 feet | - |
| Enforcing agency | Dept. of Planning and Permitting | - |
| - | - |
Highlighted rows indicate differences between cities.
Honolulu FAQ
Do I need a permit for a 6-foot privacy fence in a residential area?
A fence between 30 inches and 6 feet may qualify for Honolulu's instant online permit. Fences over 6 feet require a full building permit with structural review from DPP.
Are there different rules for corner lots?
Yes. Corner lots must comply with sight-triangle requirements to preserve driver and pedestrian visibility, potentially limiting fence height and placement near intersections.
Mililani Mauka FAQ
Does MTA approval replace a city fence permit?
No. HOA approval is separate from the city permit; both may be required depending on height and location.
Can a front-yard hedge grow taller than 36 inches?
Hedges are treated like fences under ROH 21-4.60; added landscaping and setback rules apply above 36 inches.
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