Lot Coverage Limits: Ewa Gentry vs Honolulu
How do lot coverage limits rules compare between Ewa Gentry, HI and Honolulu, HI?
Honolulu 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 →Honolulu, HI
Honolulu County
Honolulu County's LUO Section 21-3.70-1 caps impervious surface at 75 percent of lot area for residential dwellings permitted after May 1, 2019, to control runoff and preserve neighborhood character.
View full Honolulu rules →Key Facts Comparison
| Fact | Ewa Gentry | Honolulu |
|---|---|---|
| - | - | |
| Impervious cap | - | 75 percent |
| Effective date | - | May 1, 2019 |
| Code section | - | ROH 21-3.70-1 |
| Applies to | - | New residential dwellings |
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.
Honolulu FAQ
How much of my lot can I cover with buildings and pavement in Honolulu?
For residential dwellings permitted after May 1, 2019, ROH 21-3.70-1 caps impervious coverage at 75 percent of lot area. Older homes are subject to the standards in effect when permitted.
Do driveways count toward lot coverage?
Generally yes. Driveways, walkways, patios, and similar hard surfaces count toward the 75 percent impervious cap under ROH 21-3.70-1. Pervious pavers with approved drainage may be credited.
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