Lot Coverage Limits: Ewa Gentry vs Pearl City
How do lot coverage limits rules compare between Ewa Gentry, HI and Pearl City, HI?
Pearl City has fewer restrictions than Ewa Gentry.
Ewa Gentry, HI
Honolulu County
ROH Sec. 21-3.70-1 imposes impervious-surface caps on Ewa Gentry homes, including a 75 percent impervious limit for dwellings permitted after May 1, 2019.
View full Ewa Gentry rules →Pearl City, HI
Honolulu County
Pearl City lot coverage follows ROH 21-3.70-1, capping impervious surface at 75 percent for dwellings permitted after May 1, 2019, including homes in Waimalu, Manana, and Pearl City Highlands.
View full Pearl City rules →Key Facts Comparison
| Fact | Ewa Gentry | Pearl City |
|---|---|---|
| - | - | |
| Impervious cap | - | 75 percent |
| Effective date | - | May 1, 2019 |
| Code section | - | ROH 21-3.70-1 |
| Drainage overlay | - | Chapter 14 applies |
Highlighted rows indicate differences between cities.
Ewa Gentry FAQ
Does a grass paver driveway count as impervious?
Partially pervious surfaces may reduce the counted impervious area, but classification is determined by DPP during plan review.
Do pools count toward lot coverage?
Pool water surfaces and surrounding decks typically count toward impervious coverage in Ewa Gentry.
Pearl City FAQ
What is the Pearl City impervious limit?
Dwellings permitted after May 1, 2019 cap impervious surface at 75 percent of the lot under ROH 21-3.70-1. Driveways, pool decks, and patios count, pushing designs toward permeable surfaces.
Do older Manana homes have to comply?
Pre-2019 homes exceeding the 75 percent cap are typically legally nonconforming. Substantial redevelopment or expansion can trigger full compliance with the current ROH 21-3.70-1 impervious cap.
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