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. 

Koa Ridge is being developed by Castle and Cooke Hawaii, known for their development of the Mililani and Mililani Mauka neighborhoods – Hawaii’s first planned community that arose from the former plantation fields in the late 1960s. And potential Koa Ridge buyers can expect a new Central Oahu neighborhood that will appeal to a range of Hawaii residents, similar to the success of Mililani.

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. Residents in Koa Ridge will have premier access to The Village, a hip new entertainment and eating center.
  • Developer: Castle & Cooke
  • Residences: 3,500 homes including row houses, single-family detached, apartments, townhomes, multi-family homes, and senior housing
  • Average Lot Size: 4,500 square feet
  • Pricing: Nanea at Koa Ridge starts in the high $800,000s (FS), Luana at Koa Ridge in the low $700,000s (FS), and Malina at Koa Ridge from the low $400,000s (FS).
  • Construction for Koa Ridge began in the second quarter of 2020 and continued through the global Coronavirus pandemic. Construction on the first homes is expected to be completed by the end of 2020, with new residents moving in around the winter holiday season.
  • Amenities: Recreational facilities, biker- and pedestrian- friendly paths, green spaces, restaurants, shops, medical center, shopping center, public elementary school
  • Association Fee: Every home in Koa Ridge will need to pay a Master Association Fee of $67 per month. This is common for master planned communities, such as Ho‘opili and Mililani ($39 per month).

What is the Master Plan for the Koa Ridge community?

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 several 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.

Koa Ridge is being constructed with a lifestyle focus in mind that transcends the walls of each individual home. Many outdoor areas will offer relaxation and respite, including a 7-mile pedestrian path or pedway called the Hoala Trail, which will go through the community and enable less reliance on cars.

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.

What are the types of housing options in Koa Ridge?

By 2030, we can expect Koa Ridge to have around 3,500 homes to serve all types of Hawaii homebuyers. These are the first three home types of mini neighborhoods within Koa Ridge that are being constructed:


  • Detached single-family condominiums
  • Six different home designs for three- and four-bedroom floor plans
  • Prices estimated to start in the high $800,000s


  • Duplex style, “paired” homes
  • Range in size from 1,286 to 1,489 sqft.
  • Prices will start in the low $700,000s


  • Affordably priced townhomes
  • Range in size from 501 to 1,092 sqft.
  • Units expected to be for sale starting in the low $400,000s

What is it like to live in Central Oahu?

The red soil of Central Oahu has garnered a reputation for more economical housing options with all the amenities and security to call it home – whether for families, retirees, or people in all stages of life. And while this Central Oahu area has not had any residential development since the 1990s, many people and establishments already call the family-friendly area of the island home.

The Waipio community will host Koa Ridge Hawaii. Located in the Ewa district of Oahu, Waipio has been known as a sleepy former plantation town nestled between the convenient H-2 and H-1 highways. Only a 25-minute drive to Downtown Honolulu, which will become even more convenient when the Honolulu rail is running, Waipio hosts the large Patsy T. Mink Oahu Regional Park with a tennis and aquatic center, baseball diamond, archery range and more. Waipio also is located near the popular Waikele Premium Outlets, where designer brands can be found at a fraction of the price. 

With medical facilities, many shops (including Costco), parks, and more already located in Waipio, residents of Koa Ridge will be able to enjoy established businesses as well as the newly constructed neighborhood features that will be located within the Koa Ridge neighborhood.

What is the current construction status of Koa Ridge Hawaii?

If you are driving along Kamehameha Highway on your way to Mililani, you will be able to spot the mounds of red dirt and construction equipment near the Okinawan Center. Ground has been broken and grading has begun. Construction has continued steadily despite the global COVID-19 pandemic.

With the beginning steps to conduct the first lottery for the first affordably priced 100 homes was announced in July 2020, we can expect to see Koa Ridge homes rising from the red dirt by early 2021.

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.

I want to buy a home in Koa Ridge! How can I learn more information and reserve my house?

Castle and Cooke Hawaii announced that Koa Ridge homes are now for sale beginning July 2020. They expect to offer 200 homes to be moved into in 2021, with 100 Affordable Housing units. 

Four Lead Lenders (First Hawaiian Bank, Bank of Hawaii, American Savings Bank, and Central Pacific Bank) have approval to process pre-qualification and mortgages for the Koa Ridge project. Potential buyers will need to obtain a Pre-qualification Letter from one of the approved lenders to participate in the affordable homes lottery.

The model homes at Koa Ridge are expected to be completed in late 2020, and then appointments to view the newly constructed homes will be available. Expect homes to sell quickly – especially the affordably priced homes. 

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