Kitchener Barracks later housed units of the Imperial Japanese Army involved in supervising the construction of an airstrip in Changi.

Following the reoccupation of Singapore, the airstrip at Changi was strengthened for use by Royal Air Force (RAF) transport aircraft.

[4] The tender put up was won by Bestway Properties, which proposed to build a luxurious spa-resort in the old hospital by the first half of 2008.

The project fell through and was never commenced (partly due to financial difficulties during the recession at that period of time) and the site was returned to the SLA in 2010, which has since fenced up the entire compound and installed security-cameras and motion-sensors in multiple locations in and around the abandoned hospital to replace the security personnel needed to guard the area (even so, a few, mainly teens and the general youth, still attempt to sneak inside the hospital despite the risk of being arrested).

Prosegur is the security company charged by SLA to protect Changi Hospital, which continues to remain abandoned to this day.

Universal Studios Singapore (USS) has built a small replica of the ex-Changi Hospital in its theme-park to raise awareness of the famous haunted building, which becomes popular amongst visitors especially during the Halloween period.

and Incredible Tales were partly filmed at the now-abandoned hospital, which by the 2000s was already badly damaged and entirely desecrated by hundreds of vandals, criminals, drug-users and possible Satanists.

Around this time, Old Changi Hospital, as it is popularly known, was famously declared by many Singaporeans, young and old alike, to be one of the most haunted locations in the whole country.

[6] The buildings are said to be haunted by the souls of the victims of the Japanese Occupation, homeless ghosts and the spirits of those who died in the hospital.

The once-abandoned and derelict buildings and its ghostly reputation were the basis for the 2010 mockumentary Haunted Changi, which, using found-footage, told of a small group of paranormal investigators going inside the hospital to learn of its horrifying past and ended with terrifying outcomes to each member.

There is also a widespread belief of the presence of supposed underground bunkers beneath Changi Hospital (from the days when it was a military base), although there is currently no available access to them and their alleged entry-points (rumoured to be 3) are also closed off.