ADU Rules: Kailua vs Pearl City
How do adu rules rules compare between Kailua, HI and Pearl City, HI?
Kailua and Pearl City have similar restriction levels.
Kailua, HI
Honolulu County
Kailua homeowners may add one ADU per zoning lot in eligible residential districts, subject to city-wide density, parking, occupancy, and rental-duration restrictions set by the Honolulu Land Use Ordinance.
View full Kailua rules →Pearl City, HI
Honolulu County
Pearl City homeowners, including military families near Pearl Harbor, may build one accessory dwelling unit per zoning lot in eligible residential districts, subject to parking, occupancy, and rental-duration limits.
View full Pearl City rules →Key Facts Comparison
| Fact | Kailua | Pearl City |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Kailua FAQ
Can I rent my Kailua ADU on Airbnb?
No. ADUs require a minimum 30-day rental term and cannot operate as short-term vacation rentals, which are separately regulated and heavily restricted on the windward side.
How many ADUs can I build on my Kailua lot?
Only one ADU is allowed per zoning lot, regardless of lot size, under ROH Sec. 21-5.720.
Do I need a permit for an ADU in Kailua?
Yes, a building permit and compliance with ADU zoning standards are required. Unpermitted ADUs built before September 14, 2015 may qualify for after-the-fact permitting.
Pearl City FAQ
Can a military family add an ADU for visiting relatives?
Yes, if the property is in an eligible residential district and meets ADU standards. Long-term rental is allowed, but short-term rental under 30 days is not.
Does the ADU need its own parking stall?
Yes, ADUs typically require an additional off-street parking space under Sec. 21-5.720. Verify the specific requirement with DPP before applying.
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