Structure Height Limits: Kailua vs Waipahu
How do structure height limits rules compare between Kailua, HI and Waipahu, HI?
Kailua and Waipahu have similar restriction levels.
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 →Waipahu, HI
Honolulu County
Waipahu structure heights follow ROH 21-4.60 with envelope planes in 21-3.70-1, typically 25 feet in R-5 districts and higher caps in A-1 and A-2 districts near Waipahu Town Center.
View full Waipahu rules →Key Facts Comparison
| Fact | Kailua | Waipahu |
|---|---|---|
| - | - | |
| R-5 height | - | 25 feet typical |
| A-1 / A-2 | - | Higher caps |
| Code section | - | ROH 21-4.60 |
| District companion | - | ROH 21-3.70-1 |
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.
Waipahu FAQ
How tall can a Waipahu home be?
Most Waipahu R-5 lots cap structure height at 25 feet under ROH 21-4.60 and 21-3.70-1 envelope planes. Apartment districts near Waipahu Town allow substantially taller buildings for multi-family use.
Can I add a third story to a plantation home?
Usually no without a variance. Adding a full third story typically exceeds the 25-foot R-5 envelope plane under ROH 21-4.60 and 21-3.70-1. Partial second-story additions are easier to permit.
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