East Honolulu structure height is governed by ROH 21-4.60 with residential building envelope planes referenced in 21-3.70-1, typically 25 to 30 feet to protect ridge and ocean view corridors.
ROH/LUO Sec. 21-4.60 sets maximum structure heights and introduces the building envelope plane concept. District-specific residential limits in ROH 21-3.70-1 generally apply 25-foot maxima in R-5 districts covering Aina Haina and Niu Valley and 30-foot envelope planes in R-10 districts covering Hawaii Loa Ridge and Portlock. Hawaii Kai ridge lots face strict view-preservation review, and DPP variances are uncommon. Shoreline parcels along Maunalua Bay may trigger additional height and bulk controls under the Diamond Head adjacency or Special Management Area reviews. Rooftop equipment, chimneys, and solar structures receive limited height exceptions under 21-4.60 but must still respect envelope planes.
Exceeding district height creates notices of violation, requires structural alteration or partial demolition, and accrues daily civil fines under LUO Article 2 enforcement.
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See how other cities in Honolulu County handle structure height limits.
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