After his death, in 1910, the company also purchased the Honolulu Seaside Hotel, adjacent to the Moana.

"[5] In 1917, the United States Army used the second floor of the Alexander Young Hotel, while Fort Shafter was completed.

[6] The interwar years saw the hotel's Roof Garden become one of Honolulu's most fashionable social venues.

[8] Matson also acquired the Moana with this purchase, but the Alexander Young Hotel's ownership was transferred to the Alexander Young Building Co. During World War II the military occupied most of the hotel.

[2] The structure was listed on the National Register of Historic Places on August 5, 1980 as the Alexander Young Building.