Mililani Town residential lots follow ROH Sec. 21-3.70-1 impervious caps. Homes permitted after May 1, 2019 are limited to 75 percent impervious coverage, with HOAs often requiring additional landscaped area.
ROH 21-3.70-1 limits impervious coverage to 75 percent for Mililani dwellings permitted on or after May 1, 2019. Impervious surfaces include houses, driveways, walkways, and pool decks; landscaping, grass, and pervious pavers count differently. HOAs like MTA and MMA often require minimum landscaped frontage and approved plant palettes, effectively lowering the practical impervious cap. Central Oahu's lower rainfall makes runoff a lesser concern than in Kaneohe or Kailua, but the rule still applies to all recent construction. Additions, driveways, and pool projects should be planned carefully to stay within both city and HOA limits.
Over-coverage blocks permit approvals, and late discovery may require removal of non-compliant surfaces plus HOA enforcement for landscape violations.
Mililani Town, HI
Residential pools in Mililani Town must meet ROH Sec. 16-6.2 barrier standards. Fences at least 48 inches high with self-closing gates are required, on top o...
Mililani Town, HI
Mililani Town retaining walls follow ROH Sec. 21-4.40 rules and HOA review. Fill-retaining walls in required yards cannot exceed 6 feet, and terraced walls a...
Mililani Town, HI
Mililani Town fence materials are limited by both ROH Sec. 21-4.60 definitions and MTA/MMA design guidelines, which typically restrict visible front-yard mat...
Mililani Town, HI
Mililani Town neighbor fence disputes are governed by ROH Sec. 21-4.30 yard rules plus HOA covenants. Honolulu has no spite-fence ordinance, making HOA media...
Mililani Town, HI
Public parks in Mililani Town close during posted night hours under ROH Sec. 10-1.2, while HOA recreation centers follow separate private hours set by the as...
Mililani Town, HI
Mililani Town follows the state juvenile curfew under HRS Sec. 577-16 barring children under 16 from public places between 10 p.m. and 4 a.m. without a paren...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle lot coverage limits.
See how Mililani Town's lot coverage limits rules stack up against other locations.
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