The Tokugawa lords of Owari Domain had the largest number of mansions and residences, and owned the largest number of acres across Japan as the senior branch of the Tokugawa clan during the feudal Edo period. Their main residence was the Ninomaru Palace (Ninomaru Goten) at Nagoya Castle, while the Honmaru Palace (Honmaru Goten) was reserved for official guests.
The complex of Nagoya Castle included the Sannomaru Oyakata to the east, and the Shin Goten (New Palace) and the tea houses and pavillons of the Shitaofuke-niwa to the north. Other significant residences were the Aoi Oshitayashiki and the Ōzone Oshitayashiki.
Furthermore throughout the domain and outside such as in Edo the Tokugawa Owari branch kept a number of large palaces and mansions. These were called Owari Han-tei (尾張藩邸), literally "residences of the Owari Domain".
While many structures were large palaces or mansions with big land tracts around them, other residences were smaller for a reduced retinue.
List of residences and mansions in Nagoya
The core residences were located within Nagoya Castle, the political center of the domain:https://www.meihaku.jp/tokugawagosanke-gosankyo/owari-tokugawa/
Ninomaru Goten (二の丸御殿), Nagoya Castle Sannomaru Oyakata (三の丸御屋形), Nagoya Castle Shin Goten (新御殿), Nagoya Castle Shitaofuke-niwa, Nagoya Castle
Major suburban estates (御下屋敷 / secondary residences), these served as retreat residences (下屋敷, shimoyashiki) for the lords:https://www.meihaku.jp/tokugawagosanke-gosankyo/owari-tokugawa/https://rice2004.org/%E5%B0%BE%E5%BC%B5%E8%97%A9%E6%B1%9F%E6%88%B8%E5%B1%8B%E6%95%B7%E3%81%AE%E6%AD%B4%E5%8F%B2-%E5%B0%BE%E5%BC%B5%E8%97%A9%E5%BE%B3%E5%B7%9D%E5%AE%B6%E4%B8%8A%E5%B1%8B%E6%95%B7-%E5%B0%BE%E5%BC%B5/
Aoi Oshitayashiki (葵 御下屋敷), Higashi Ward, Nagoya Ōzone Oshitayashiki (大曽根 御下屋敷), Higashi Ward, Nagoya
in Owari Regional palaces (御殿 / goten) numerous domain residences and villas:https://www.meihaku.jp/tokugawagosanke-gosankyo/owari-tokugawa/
Yanagihara Hioki Goten (柳原日置御殿), Nakamura Ward, Nagoya Higashihama Goten (東浜御殿), Atsuta Ward, Nagoya Nishihama Goten (西浜御殿), Atsuta Ward, Nagoya Yokosuka Goten (横須賀御殿), Tōkai Ōno Goten (大野御殿), Ōno Asamiya Goten (朝宮御殿), Kasugai Sakashita Goten (坂下御殿), Kasugai Mizuno Goten (水野御殿), Seto Arai Goten (新居御殿), Owariasahi Komaki Goten (小牧御殿), Komaki Tsushima Goten (津島御殿), Tsushima Saya Goten (佐屋御殿), Aisai Uzurayama Goten (鶉山御殿), Aisai Hagiwara Goten (萩原御殿), Ichinomiya Kariyasuga Goten (苅安賀御殿), Ichinomiya
in Mino Gifu Goten (岐阜御殿), Gifu
in Edo
In Edo a number of various sites were kept for administrative but also prestige and status reasons.
Upper residence (上屋敷 / kamiyashiki): Ichigaya Kamiyashiki (市ヶ谷上屋敷)
Middle residence (中屋敷 / nakayashiki): Kōjimachi Nakayashiki (麹町中屋敷)
Lower residence (下屋敷 / shimoyashiki): Toyama Shimoyashiki (戸山下屋敷)
Other Edo residences: Nezumiana Yashiki (鼠穴屋敷) Tsukiji Kurayashiki (築地蔵屋敷)
References