Tower excavations and infill projects in Urban Honolulu must obtain grading permits under ROH Chapter 18A, with dewatering, shoring, and drainage coordination critical in Kakaako and Ala Moana's high water-table conditions.
Chapter 18A governs grading, grubbing, and stockpiling permits for Urban Honolulu projects, including tower basements in Kakaako and Ala Moana where excavation below sea level requires careful dewatering coordinated with ROH Chapter 43 stormwater rules. Sec. 18A-2.2 details application requirements including plans, cross-sections, and hydrology. Sec. 18A-2.4A adds enhanced penalties for any grading without a permit. Article 3 covers grubbing and stockpiling, with Urban Honolulu projects usually relying on truck haul-off rather than on-site stockpiling given site constraints. Bonds are required to secure site stabilization.
Grading without a permit triggers doubled fees under Sec. 18A-2.4A, stop-work orders, civil fines up to $1,000 per day, and potential coordinated enforcement with MS4 and building code violations.
Urban Honolulu, HI
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Urban Honolulu, HI
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Urban Honolulu, HI
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Urban Honolulu, HI
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Urban Honolulu, HI
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Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle grading & drainage.
See how Urban Honolulu's grading & drainage rules stack up against other locations.
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