Central Oahu

Koa Ridge is a expansive master-planned "surban" community in Central Oahu between Mililani and Waipio, developed by Castle & Cooke to blend urban conveniences with suburban tranquility across roughly 670 acres. It will ultimately house about 3,500 residences in phases over 8-10 years, including affordable condos and townhomes (like the Keolu series with 1-3 bedrooms from 487-1,079 sq ft), market-rate single-family homes (3-4 bedrooms in neighborhoods like Nanea and Waioha), duplexes, senior housing, and multi-generational options on average 4,500 sq ft lots. The community emphasizes walkability with a 7.5-mile Ho'ala Trail linking parks, schools, shopping at The Gateway (grocery, retail, hotel, restaurants), cultural events at Hale Lau Koa pavilion, a new elementary school, community center, fire station, daycare, and a 28-acre healthcare campus partnering with Wahiawa Hospital.​

At the heart is a lifestyle promoting outdoor activity and 'ohana ties, with neighborhood parks featuring tennis courts, baseball fields, grassy areas, and bike-friendly paths that reduce car dependence while offering Waianae Mountain views. About 1,050 units target affordable buyers (80-120% area median income) via lotteries with approved lenders, while market homes cater to families, retirees, and first-timers in Oahu's red-soil heartland—Central Oahu's first major residential push since the 1990s. Phases like Malu Koa West (4-story mid-rises) and Malina townhomes roll out modern features such as solar water heaters and smart home tech.​​

From a technical standpoint, Koa Ridge's infrastructure supports its mixed-use density with landscaped sidewalks, shared-use paths, and public transit integration tying into nearby hubs like Costco and Waipio services, all under an Urban Design Plan ensuring small-town character amid 3,500 homes. Civil engineering includes stormwater management, traffic-calmed streets, and phased utilities (water, power, sewer) scaled for growth, with the Ho'ala Trail built as a permeable, multi-use corridor minimizing environmental impact on Oahu's central plateau. The Gateway commercial core and business park provide on-site jobs, while donated land for medical facilities enhances long-term sustainability in this self-contained surban model.