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🌍 Environmental Rules/Grading & Drainage

Grading & Drainage: East Honolulu vs Kapolei

How do grading & drainage rules compare between East Honolulu, HI and Kapolei, HI?

East Honolulu and Kapolei have similar restriction levels.

East Honolulu, HI

Honolulu County

Heavy Restrictions

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.

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Kapolei, HI

Honolulu County

Heavy Restrictions

Kapolei grading, grubbing, stockpiling, and drainage work is regulated by ROH Chapter 18A, which requires permits, bonds, and inspections for qualifying land-disturbing activity.

View full Kapolei rules β†’

Key Facts Comparison

FactEast HonoluluKapolei
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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.

Kapolei FAQ

Do I need a permit for a retaining wall and regrade in Kapolei?

Yes, if the project meets the thresholds in Chapter 18A, you need a grading permit and often an erosion and sediment control plan.

What if I find my contractor graded without a permit?

Sec. 18A-2.4A treats this as a violation, and the Department of Planning and Permitting can issue penalties and require corrective measures.

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