Structure Height Limits: Kapolei vs Waipahu
How do structure height limits rules compare between Kapolei, HI and Waipahu, HI?
Kapolei and Waipahu have similar restriction levels.
Kapolei, HI
Honolulu County
ROH Sec. 21-4.60 sets the maximum structure heights for Kapolei, pairing absolute caps with sloped building envelope planes so tall second stories stay away from property lines.
View full Kapolei 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 | Kapolei | 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.
Kapolei FAQ
How tall can apartments be near the Kapolei town center?
Mixed-use and apartment districts in the Kapolei town center allow significantly taller buildings than standard residential zones.
Are chimneys included in the height cap?
Chimneys and similar narrow rooftop features often qualify for limited exceptions under ROH 21-4.60.
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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