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πŸ—οΈ Accessory Structures/Garage Conversions

Garage Conversions: Ewa Gentry vs Mililani Town

How do garage conversions rules compare between Ewa Gentry, HI and Mililani Town, HI?

Ewa Gentry and Mililani Town have similar restriction levels.

Ewa Gentry, HI

Honolulu County

Heavy Restrictions

A garage conversion in Ewa Gentry is generally treated as creating an accessory dwelling unit under ROH Sec. 21-5.720 and requires a building permit plus replacement parking on the lot.

View full Ewa Gentry rules β†’

Mililani Town, HI

Honolulu County

Heavy Restrictions

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 β†’

Key Facts Comparison

FactEwa GentryMililani Town
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Highlighted rows indicate differences between cities.

Ewa Gentry FAQ

Do I need a permit to convert my garage?

Yes. Any change of use from garage to habitable space requires a building permit and must meet ADU standards.

What happens to my required parking?

You must replace the off-street stalls elsewhere on the lot, such as in a driveway or a new covered stall.

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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