Carport Rules: Kailua vs Mililani Mauka
How do carport rules rules compare between Kailua, HI and Mililani Mauka, HI?
Kailua and Mililani Mauka have similar restriction levels.
Kailua, HI
Honolulu County
Kailua carports must follow city-wide dimensional standards capping horizontal size at 20 feet by 20 feet, with limited hillside exceptions for Type V-B construction.
View full Kailua rules →Mililani Mauka, HI
Honolulu County
Carports in Mililani Mauka are limited to 20 ft by 20 ft horizontally under ROH Sec. 21-2.140-1, with setbacks from Sec. 21-4.30 and height from Sec. 21-4.60 also applying.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | Kailua | Mililani Mauka |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Kailua FAQ
Can I build a larger carport than 20 by 20 feet?
Generally no. Horizontal dimensions are capped at 20 ft x 20 ft under ROH Sec. 21-2.140-1, with narrow hillside exceptions.
Does enclosing my Kailua carport create an ADU?
If the enclosed space becomes habitable, it may be regulated as an ADU under Sec. 21-5.720 and require permits and compliance with ADU rules.
Mililani Mauka FAQ
Can I add a second carport?
Only if total dimensions, setbacks, and HOA standards allow; review both city and MMCA rules first.
Is a carport cover a permit activity?
Yes, any attached structural cover requires a building permit.
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