Accessory Structures in Mililani Mauka, HI (2026)
5 verified accessory structures rules for Mililani Mauka, Hawaii, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Mililani Mauka homeowners may build one ADU per zoning lot under ROH Sec. 21-5.720 if city rules and the Mililani Mauka Community Association covenants allow, with parking and 30-day rental minimums required.
ADUs in Mililani Mauka
Heavy RestrictionsShed Rules
Sheds in Mililani Mauka must satisfy both ROH Sec. 21-4.30 yard setbacks and Mililani Mauka Community Association design rules, which commonly govern size, color, and location.
Sheds Under HOA Design Review
Heavy RestrictionsGarage Conversions
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.
Garage Conversions in Mililani Mauka
Heavy RestrictionsCarport Rules
Carports in Mililani Mauka are limited to 20 ft by 20 ft horizontally under ROH Sec. 21-2.140-1, with setbacks from Sec. 21-4.30 and height from Sec. 21-4.60 also applying.
Carport Rules in Central Oahu
Some RestrictionsTiny Homes
Tiny homes in Mililani Mauka are regulated as ADUs under ROH Sec. 21-5.720 when on a foundation, but the Mililani Mauka Community Association often prohibits them outright; tiny homes on wheels are not permitted as dwellings.
Tiny Homes and HOA Restrictions
Heavy RestrictionsLooking for Honolulu County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mililani Mauka city rules.
Accessory Structures in Honolulu County →