Structure Height Limits: Kailua vs Urban Honolulu
How do structure height limits rules compare between Kailua, HI and Urban Honolulu, HI?
Kailua has fewer restrictions than Urban Honolulu.
Kailua, HI
Honolulu County
ROH Sec. 21-4.60 caps building heights and defines building envelope planes for Kailua structures. Residential districts typically allow 25 to 30 feet, protecting windward viewsheds and ocean breezes.
View full Kailua rules →Urban Honolulu, HI
Honolulu County
Urban Honolulu caps residential structures at 25 feet under ROH 21-4.60 with a 30-foot envelope plane, while Waikiki, Kakaako, and Ala Moana high-rise districts follow separate maximum heights.
View full Urban Honolulu rules →Key Facts Comparison
| Fact | Kailua | Urban Honolulu |
|---|---|---|
| - | - | |
| Residential cap | - | 25 feet |
| Envelope plane | - | 30 feet |
| Primary section | - | ROH 21-4.60 |
| Kakaako oversight | - | HCDA |
Highlighted rows indicate differences between cities.
Kailua FAQ
Can I build a two-story home in Kailua?
Yes, most residential zones allow two stories within the 25 to 30 foot height envelope under ROH 21-4.60.
Do solar panels count toward height?
Roof-mounted solar panels generally receive exceptions, but ground-mounted or racked systems may be limited by envelope rules.
Urban Honolulu FAQ
How tall can I build a house in Urban Honolulu?
Most residential districts cap structures at 25 feet under ROH 21-4.60 with a 30-foot envelope plane rising from side yards. Apartment and mixed-use districts in Waikiki and Kakaako allow much taller buildings.
Why are Waikiki and Kakaako buildings so much taller?
Those districts carry separate height maximums under special district rules and, in Kakaako, Hawaii Community Development Authority oversight. View-corridor protections still limit where high-rises may rise.
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