The mansions lining Kahala Avenue have been designated as residences for the wealthy since the early development of Honolulu in the 1930s. Honolulu, the capital of Hawaii's Oahu Island, has high overall housing prices due to its geographical constraints as an island, but there are significant disparities within that range.

Kahala is the premier luxury residential area representing Honolulu. Centered around Kahala Mall and the Kahala Resort, this region features large lots and many homes that guarantee privacy, and it is frequently mentioned due to its history of being home to celebrities and business leaders. The median home price is reported to be between $2.5 million and $3 million.

The area near Diamond Head has also maintained its status as a high-end residential area for a long time, thanks to the scenic premium provided by the volcanic crater. Its proximity to Waikiki, while being away from the noise of tourist attractions, is considered a strong point, with median prices estimated around $2 million.

The Portlock district in Hawaii Kai is a relatively quiet eastern area, favored by affluent individuals for its large homes by the sea and private atmosphere. The median price is around $2 million to $2.5 million.

The background for these areas becoming affluent neighborhoods includes the island's unique limited land supply, locations that offer views of both the ocean and mountains, and the long-established presence of an upper-class community. In particular, Kahala has served as a social center for Honolulu's elite since the early 20th century, which is likely reflected in its prices.

The overall median home price in Oahu exceeds $1 million, placing it among the highest in the United States, but areas like Kahala and Diamond Head form price ranges that are more than double that, indicating significant disparities even within the island.

Hawaii has a long history of Korean immigration, and some Korean households operating in professional fields or businesses tend to prefer stable school districts near Kahala or Manoa. However, due to the high absolute price levels, many approach these areas for long-term investment or as a place to settle after retirement rather than for primary residence.

Given the island's characteristics, new supply is limited, leading to assessments that there is not much downward pressure on prices in the long term. However, due to the economy's high dependence on tourism, it is also necessary to consider the risks associated with economic fluctuations.