The house and gardens are in the process of evolving into a museum commemorating the Hatoyama family's contributions to politics and education in Japan.
The facade is composed of three bays in natural stone, with large French windows on the ground floor.
[2] There are currently three memorial rooms open to the public, one dedicated to Ichiro, another to his wife Kaoru, and yet another to their son, Iichiro Hatoyama.
In addition, the garden features sculptures of Kazuo Hatoyama and his wife, Haruko.
[1] The Hatoyamas have been active participants in Japanese public life,[3] including: