City · Hawaii
ADU rules in Honolulu
1 source
These are the primary sources for accessory dwelling unit regulations in Honolulu: the city's own zoning code, planning department pages, and permit guides. Start here before talking to anyone: the rules below are what your permit reviewer will apply.
ADU regulations
Hawaii statewide law also applies
Hawaii sets baseline ADU rights at the state level. Where local rules are stricter than state law allows, state law usually wins, so both are worth reading.
See Hawaii statewide rulesSpotted something outdated?
Zoning codes change. If a link is dead or Honolulu has updated its ordinance, report it and we'll verify against the official source.
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