As a result of another investigation, the two story building was determined to have been built in the same year when the main building was constructed and was considered for additional designation but due to various factors such as drastic alterations of the interior of the house that had taken place and the wishes of the family head, it was decided that no designation was to be given.
再度の調査で本建物と同期のものであり、当然追加指定ということも考えられたが、内部改造のはげしかったことと、当主の希望などもあって指定しないことにした。