Grading & Drainage: Kailua vs Mililani Mauka
How do grading & drainage rules compare between Kailua, HI and Mililani Mauka, HI?
Kailua has fewer restrictions than Mililani Mauka.
Kailua, HI
Honolulu County
Kailua projects that cut, fill, stockpile, or trench earth generally need a grading permit under ROH Chapter 18A, with drainage controls reviewed as part of the permit.
View full Kailua rules →Mililani Mauka, HI
Honolulu County
Mililani Mauka grading, grubbing, stockpiling, and drainage work is regulated under ROH Chapter 18A, which requires permits, bonds, and inspections for qualifying land-disturbing activity.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | Kailua | Mililani Mauka |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Kailua FAQ
Does landscaping need a grading permit?
Minor landscaping is usually exempt, but significant cut or fill, retaining walls, or driveway regrading typically require a permit.
Can I stockpile fill on my lot?
Extended stockpiling can trigger Chapter 18A Article 3 requirements, including erosion controls and potentially a permit.
Mililani Mauka FAQ
Do I need a grading permit for a small Mililani Mauka yard terrace?
If the work meets Chapter 18A's volume, slope, or height thresholds, a grading permit is required along with any necessary erosion control plan.
What about a contractor stockpiling soil on my lot?
Stockpiling above the thresholds in Article 3 requires a permit under Chapter 18A, and failing to permit can lead to penalties under Sec. 18A-2.4A.
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