After World War II, it was mainly used as the auditorium for the Taiwan Railway Administration (TRA) and was designated as a historic site at the Taipei Municipality Level in 2005.

In December 1924, the Transportation Bureau was established above the Railway Department to support the administrative restructuring of the Office of the Governor-General of Taiwan.

Subsequently, plans were made to expand eastward from the existing premises to construct more workshop buildings .

As the railway industry developed over the years, more buildings were constructed on the premises to meet the growing operations of the workshop.

After the relocation, the existing workshop buildings built during the eastward expansion in 1909 were used as the offices for the related units of the Railway Department.

After World War II, it was mainly used as the auditorium for the Taiwan Railway Administration (TRA) starting from June 1949.

However, in the early 1980s, two pairs of arches on the north side were demolished during the construction of Civic Boulevard, where it attained its current appearance.

[3]: 71 In 2005, the Old Taipei Railway Workshop was designated and added to the Historic Sites of the Taipei Municipality Level, and listed as part of the historic site of the Railway Department, Transportation Bureau, Office of the Governor-General of Taiwan.

It was moved back to the current location in 2012, and a temporary steel shed was constructed around it for protection.

In 2020, the Department of Rapid Transit Systems of the Taipei City Government sponsored and launched a restoration project for the historic site.

This was designed and supervised by Hsu Yu-Chien & Associates, Architects, and the project was awarded to Songken Construction Engineering Co., Ltd.[8]