Grading & Drainage: Ewa Gentry vs Waipahu
How do grading & drainage rules compare between Ewa Gentry, HI and Waipahu, HI?
Ewa Gentry and Waipahu have similar restriction levels.
Ewa Gentry, HI
Honolulu County
Ewa Gentry 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 Ewa Gentry rules →Waipahu, HI
Honolulu County
Waipahu land disturbing activities require grading permits under ROH Chapter 18A, which governs permits, bonds, inspections, and drainage review for all qualifying work.
View full Waipahu rules →Key Facts Comparison
| Fact | Ewa Gentry | Waipahu |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Ewa Gentry FAQ
Do I need a grading permit to regrade my Ewa Gentry backyard?
If the work exceeds the volume or slope thresholds in Chapter 18A, a grading permit is required along with any needed erosion control plan.
What happens if I grade without a permit?
Sec. 18A-2.4A treats grading without a permit as a violation, which can lead to stop work orders, penalties, and required remediation.
Waipahu FAQ
Does adding fill for a small Waipahu addition need a permit?
Yes, if the fill or grading exceeds thresholds in Chapter 18A. Even modest grading associated with additions typically requires a grading permit, so confirm with permitting before starting.
Can my neighbor's runoff come onto my lot?
Grading permit drainage review is intended to prevent concentrated runoff onto neighbors. If your neighbor's grading changed drainage, document it and contact the Department of Planning and Permitting.
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