Koa Ridge Hawaii

Construction has begun on a new urban neighborhood between Mililani and Waipio. Koa Ridge’s 576 acres will offer eateries, green spaces, beautiful views of the Waianae Mountain Range, walker- and biker-friendly paths, a hospital, a school, a community center, and over 3,500 diverse housing options – making this new neighborhood healthy, convenient, and fit for a variety of local lifestyles.

Quick Facts

  • Location: Koa Ridge Hawaii will be located between Mililani and Waipio. Plantation Road, currently a dirt road that flows through the construction site, has an entrance gate across the street from Costco in Mililani.
  • Developer: Castle & Cooke
  • Residences: 3,500 homes including row houses, single-family detached, apartments, multifamily homes, and senior housing
  • Pricing: TBA - In 2017, it was expected to range from the mid- $300,000s to $900,000 with 1,050 homes (roughly 30%) priced according to the City and County's affordable housing criteria.
  • Amenities: Recreational facilities, biker- and pedestrian- friendly paths, green spaces, restaurants, shops, medical center, shopping center, public elementary school

Koa Ridge Hawaii is 20 years in the making. Why was it delayed?

The land that will soon be Koa Ridge was initially classified as agricultural land, so it needed to be reclassified to urban land. A petition was submitted to reclassify the land and it was approved 2 years later in 2002. To cut a long story short, the reason Koa Ridge was delayed was because of paperwork, protesting, and preservation. For nearly 16 years, petitions were held up in litigation and it escalated all the way up to the Hawaii Supreme Court where they made a final decision in 2016 that the Land Use Commission (LUC) properly reclassified the land from agricultural to urban land use.

Castle & Cooke broke ground on Thursday, November 2, 2017.

The Master Plan

While sales have yet to begin, homes are expected to be delivered in 2020. And the detailed Master Plan, which integrated community members’ input into its visioning process, outlines a number of features and amenities to meet the diverse dreams of future community members.

Residential Options

The Central Oahu community will offer a range of housing options – from multi-family homes to apartments to row houses to single-family detached homes. Of the 3,500 planned homes, 1,050 will be “affordable” with pricing for families earning 80 to 120 percent of the area median income. Whether a first-time home buyer, a retiree desiring to downsize, or a family wanting to move into a close-knit community, Koa Ridge will offer a variety of options to meet differing residential needs.

The first phase of construction is expected to include affordable multifamily units, market-price single-family homes, and market-price row homes. Construction for these homes will occur near the intersection of Kamehameha Highway and Ka Uka Boulevard.

Biker and Pedestrian Friendly

Over seven miles of separated roadways will allow bikers and walkers to actively and easily enjoy Koa Ridge. All the amenities of the community will be linked by beautifully-landscaped sidewalks and bike paths: ride bikes home from school as a family; walk to a restaurant to meet friends; skateboard around town; or walk the dog to the neighborhood park.

The Village

A walkable area in the heart of Koa Ridge will offer a range of amenities for residents and visitors to enjoy. Eat at one of the restaurants. Sip coffee at a café. Shop at the farmer’s market. Peruse the shops. Visit out-of-town friends at the hotel. Or take your keiki to play on the grassy area in the center of the complex. A range of retail, dining, and entertainment options are planned.


Along Ka Uka Boulevard, across from the current Costco, a commercial space will conveniently meet the needs of Koa Ridge residents. A grocery store, restaurants, banks, a drug store, and more are planned for this shopping center called Gateway.

Park and School and More

Koa Ridge will have a community park with tennis courts, baseball fields, open grassy spaces, and more. The Hawaii Department of Education plans to construct a new public elementary school in the community. A fire station, churches, daycare facilities, and more are included in the Koa Ridge Master Plan – assuring a true live, work, and play community.

Community Center

Near the school, a multi-purpose community center is planned. Expect classes, meeting spaces, recreational facilities, and more.

Medical Center

The developer, Castle & Cooke, has committed to donating 28 acres for a medical complex. The Wahiawa Hospital Association will partner to develop the medical facilities, creating convenient options to ensure a healthy lifestyle.