Structure Height Limits: East Honolulu vs Mililani Mauka
How do structure height limits rules compare between East Honolulu, HI and Mililani Mauka, HI?
East Honolulu and Mililani Mauka have similar restriction levels.
East Honolulu, HI
Honolulu County
East Honolulu structure height is governed by ROH 21-4.60 with residential building envelope planes referenced in 21-3.70-1, typically 25 to 30 feet to protect ridge and ocean view corridors.
View full East Honolulu rules →Mililani Mauka, HI
Honolulu County
ROH Sec. 21-4.60 sets maximum structure heights for Mililani Mauka, with residential districts typically capping homes at 25 to 30 feet and applying sloped envelope planes.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | East Honolulu | Mililani Mauka |
|---|---|---|
| R-5 height | 25 feet typical | - |
| R-10 height | 30-foot envelope | - |
| Code section | ROH 21-4.60 | - |
| District companion | ROH 21-3.70-1 | - |
| - | - |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
How tall can a Hawaii Kai home be?
Most East Honolulu residential districts cap structure height at 25 to 30 feet under ROH 21-4.60 and 21-3.70-1 envelope planes. Hawaii Loa Ridge lots typically fall under the 30-foot R-10 standard.
Do ridge lots face view-corridor review?
Yes. DPP scrutinizes Hawaii Loa Ridge, Mariners Ridge, and Kuliouou ridge homes for view impacts. Envelope plane rules in 21-4.60 and 21-3.70-1 are enforced strictly to protect neighboring view corridors.
Mililani Mauka FAQ
Can I add a second story to my Mauka home?
Second-story additions are possible but must fit within the 21-4.60 envelope planes and pass MTA design review.
Do decorative parapets count toward height?
Minor rooftop features often qualify for limited exceptions, but the specifics depend on the LUO and permit review.
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