ADU rules in Mililani Mauka, HI β also called accessory dwelling unit regulations or granny flat ordinances β cover setbacks, owner-occupancy, parking, and permit requirements.
Mililani Mauka homeowners may build one ADU per zoning lot under ROH Sec. 21-5.720 if city rules and the Mililani Mauka Community Association covenants allow, with parking and 30-day rental minimums required.
The Honolulu Land Use Ordinance at ROH Sec. 21-5.720 permits one accessory dwelling unit per zoning lot in Country, R-3.5, R-5, R-7.5, R-10, and R-20 districts, which covers much of Mililani Mauka. Ordinance 25-2 refined size, parking, occupancy, and after-the-fact permit pathways. However, the Mililani Mauka Community Association's CC&Rs and design review committee apply on top of the city code and may prohibit or significantly restrict ADUs, including limits on secondary dwellings, exterior modifications, and rentals. Homeowners should secure association approval before submitting a city permit, and remember that ADU rentals under 30 days are prohibited citywide.
Unpermitted work can trigger DPP notices of violation, daily fines, and additional HOA enforcement actions.
Mililani Mauka, HI
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Mililani Mauka, HI
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Mililani Mauka, HI
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Mililani Mauka, HI
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Mililani Mauka, HI
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Mililani Mauka, HI
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Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle adu rules.
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