Conservation and Renovation Work of the Office and Hall of All Japan Seamen’s Union (1)：overview of the Building and the Process Leading to the Renovation

There are still not many academic reports on cases where privately owned postwar modern architecture that are not registered as cultural properties and have been completely renovated. In order to preserve and maintain more modern architecture in the future, it is essential not only to discuss methodologies, but also to accumulate reports of similar cases that can be referred to. This paper reports the overview of the Office and Hall of All Japan Seamen’s Union designed by Masato Otaka and completed in 1964, and its process toward the decision making of the renovation project.