Some domains also maintained another spare Edo residence, known as the nakayashiki (中屋敷), located at some intermediate distance, which was often inhabited by the younger generation who would succeed to the lordship, or to a retired former lord.
[1] This residence of Matsudaira Tadamasa was a magnificent Momoyama-style compound, constructed on a large lot.
The complex was protected by high, white-washed walls with two-storey watch towers at each corner.
The layout and appearance was typical for the daimyō residences in the Ōtemachi area outside Edo Castle, as is evidenced in the depiction seen on the contemporary Edo-zu byōbu screens from the 17th century.
The 1/30 scale model in the Edo-Tokyo Museum was reproduced based mainly on three sources: illustrations in the Iyo-dono yashiki sashi-zu ("Illustrations of the mansion of the Governor of Iyo") which is in the possession of the Ikeda family archives at Okayama University, the Edo-zu byōbu ("Screens of Edo") in the collection of the National Museum of Japanese History, and the Kōra Kōnen oboegaki ("Memorandum of Kōra Kōnen") in the Tokyo Metropolitan Library.