Pearl City retaining walls on the Pearl City Highlands and Manana hillsides fall under ROH 21-4.40, capping fill-bearing walls in required yards at 6 feet and combining terraced heights.
ROH/LUO Sec. 21-4.40 governs retaining walls throughout Pearl City. Walls containing fill within a required yard cannot exceed 6 feet, and terraced walls are measured as a combined height when the horizontal separation is narrow, preventing stacked-wall workarounds. On the steep Pearl City Highlands and Manana hillsides, walls above the 30-inch building permit threshold require engineered drawings, geotechnical review, and drainage analysis. DPP pairs retaining wall review with Chapter 14 grading permits. Rainy-season runoff toward Waimalu Stream and Pearl Harbor means drainage compliance is enforced closely. Military-family rental homes on hillside lots often inherit legacy walls that must be re-evaluated during remodeling permits.
Oversized or unpermitted retaining walls can trigger DPP stop-work orders, required structural rebuilds, doubled after-the-fact permit fees, and lien-eligible abatement costs for uncorrected failures.
Pearl City, HI
Public parks in Pearl City, including Pearl City District Park and Neal S. Blaisdell Park, are closed during posted night hours. Entering closed parks is pro...
Pearl City, HI
Pearl City follows the Hawaii state juvenile curfew under HRS 577-16. Children under 16 cannot be in public places between 10 pm and 4 am without a parent or...
Pearl City, HI
Honolulu operates an islandwide curbside recycling program serving Pearl City. At least two recyclable materials are collected, with no apartment-specific ma...
Pearl City, HI
Pearl City residents must schedule appointment-based bulky waste pickup and may only set items out the evening before collection. Failure to remove items wit...
Pearl City, HI
Pearl City carts must be placed curbside with clearance and proper orientation for automated collection and must not block sidewalks, driveways, or create sa...
Pearl City, HI
Pearl City residents must prepare refuse and recyclables under ROH rules, including limits on branch diameter, bundle weight, and green-waste length for manu...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle retaining walls.
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