Garage conversion rules in Mililani Mauka, HI — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Garage conversions in Mililani Mauka follow ADU rules under ROH Sec. 21-5.720 and permit rules under Sec. 18-3.2, plus separate Mililani Mauka Community Association design approval.
Converting a garage to living space in Mililani Mauka is treated as creating an accessory dwelling unit under ROH Sec. 21-5.720. A building permit is required under ROH Sec. 18-3.2, and any off-street parking lost to the conversion must be replaced on the property. The Mililani Mauka Community Association's design review typically also applies, and its covenants often require the home to retain its original garage character and parking stalls, making full conversions difficult to approve. Pre-September 14, 2015 unpermitted conversions may qualify for an after-the-fact city permit, but HOA compliance is separate and must still be met.
City can issue stop-work orders and daily fines; HOA can require restoration or levy separate fines.
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 garage conversions.
See how Mililani Mauka's garage conversions rules stack up against other locations.
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