Structure Height Limits: Mililani Town vs Pearl City
How do structure height limits rules compare between Mililani Town, HI and Pearl City, HI?
Mililani Town and Pearl City have similar restriction levels.
Mililani Town, HI
Honolulu County
ROH Sec. 21-4.60 limits Mililani Town residential building heights to roughly 25 feet flat or 30 feet pitched, with HOA guidelines often further restricting visible bulk in this master-planned community.
View full Mililani Town rules →Pearl City, HI
Honolulu County
Pearl City structure heights follow ROH 21-4.60 with residential envelope planes in 21-3.70-1, typically 25 feet in R-5 districts covering Waiau, Manana, and the core Pearl City CDP.
View full Pearl City rules →Key Facts Comparison
| Fact | Mililani Town | Pearl City |
|---|---|---|
| - | - | |
| R-5 height | - | 25 feet typical |
| R-7.5/R-10 | - | 30-foot envelope |
| Code section | - | ROH 21-4.60 |
| Airspace overlay | - | FAA Part 77 |
Highlighted rows indicate differences between cities.
Mililani Town FAQ
Can I add a second story to my single-story Mililani home?
Often yes within height limits, but HOA design review may restrict placement, size, or require harmonized architecture.
Are rooftop solar arrays restricted?
Roof-mounted solar generally gets exceptions, but HOA guidelines may dictate panel orientation and visibility from street.
Pearl City FAQ
How tall can a Pearl City home be?
Most Pearl City residential districts cap structure height at 25 feet in R-5 and 30 feet in R-7.5 and R-10 under ROH 21-4.60 and 21-3.70-1 envelope planes. FAA limits may apply near flight paths.
Does proximity to Pearl Harbor affect height?
Yes. FAA Part 77 imaginary surfaces may restrict absolute building height near the Joint Base approach corridors. Homes in some Pearl City areas must review both ROH and FAA limits before adding stories.
Compare other topics
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