Garage conversion rules in East Honolulu, HI — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a garage into living space in East Honolulu is treated as creating an ADU under the LUO and requires building permits plus replacement parking for the original garage use.
ROH Sec. 21-5.720 governs garage-to-living-space conversions in Hawaii Kai and Aina Haina as accessory dwelling unit creation. Conversions must meet ADU standards including minimum lot size, replacement off-street parking for the displaced garage, and compliance with setback and height limits. Building permits are required under ROH Sec. 18-3.2. The ordinance also includes after-the-fact permit provisions for garage conversions completed before September 14, 2015 without permits. Homeowners must comply with building, electrical, and plumbing code for habitable space.
Converting a garage to living space without a permit, failing to provide replacement parking, or renting the converted space short-term may trigger fines and abatement.
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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 East Honolulu's garage conversions rules stack up against other locations.
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