Grading & Drainage: East Honolulu vs Honolulu
How do grading & drainage rules compare between East Honolulu, HI and Honolulu, HI?
East Honolulu and Honolulu have similar restriction levels.
East Honolulu, HI
Honolulu County
East Honolulu hillside lots in Mariner's Ridge, Kamilo Iki, and Kuliouou Valley require grading permits under ROH Chapter 18A when land disturbance exceeds permit thresholds.
View full East Honolulu rules →Honolulu, HI
Honolulu County
Honolulu County regulates grading and drainage under ROH Chapter 18A, requiring permits, bonds, and inspections for land alteration across Oahu to protect slopes, streams, and downstream properties.
View full Honolulu rules →Key Facts Comparison
| Fact | East Honolulu | Honolulu |
|---|---|---|
| - | - | |
| Authority | - | ROH Chapter 18A |
| Permit section | - | Sec. 18A-2.2 |
| No-permit penalty | - | Sec. 18A-2.4A |
| Article 3 | - | Grubbing and stockpiling |
| Bonds | - | Required for stabilization |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
Does a small retaining wall need a grading permit in Hawaii Kai?
Retaining walls and associated excavation typically require grading and building permits when they exceed minor thresholds in Chapter 18A, so confirm with the Department of Planning and Permitting before starting.
What happens if I grade without a permit?
Sec. 18A-2.4A imposes penalties for grading without a permit, and enforcement may include stop-work orders, restoration requirements, and fines.
Honolulu FAQ
When do I need a grading permit on Oahu?
Chapter 18A triggers a grading permit for most earthwork exceeding minimum thresholds in cubic yards or slope, and any fill in drainageways, wetlands, or near streams.
What happens if I grade without a permit?
Sec. 18A-2.4A imposes enhanced penalties, including doubled permit fees, stop-work orders, required restoration, and potential civil fines accruing daily until resolved.
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