Garage Conversions: East Honolulu vs Mililani Town
How do garage conversions rules compare between East Honolulu, HI and Mililani Town, HI?
East Honolulu has fewer restrictions than Mililani Town.
East Honolulu, HI
Honolulu County
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.
View full East Honolulu rules →Mililani Town, HI
Honolulu County
Garage conversions in Mililani Town are regulated as ADUs under ROH Sec. 21-5.720 and commonly prohibited or restricted by HOA covenants, requiring both city permits and association approval.
View full Mililani Town rules →Key Facts Comparison
| Fact | East Honolulu | Mililani Town |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
Can I convert my garage into a rental unit?
Yes, if it meets ADU requirements including parking replacement, setbacks, lot size, and you obtain proper building permits. Short-term rentals are not allowed.
What if my garage was converted years ago without a permit?
You may qualify for an after-the-fact permit if the conversion was completed before September 14, 2015. Contact DPP to review your specific situation.
Mililani Town FAQ
Can I convert my Mililani garage into a bedroom?
Check your HOA CC&Rs first. Many Mililani associations prohibit garage conversions. If allowed, a city building permit and ADU compliance are still required.
What if my neighborhood allows it but parking is tight?
You will need to provide replacement parking on your lot that meets city standards and often HOA surface and placement rules.
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