The Itsukaichi Constitution is recorded as one of the ancient documents of the tangible cultural assets of Tokyo, and the place where the residence of the Fukawaza family used to be located (where the earthen storehouse still remains) is designated as one of the ancient sites.
五日市憲法は東京都の有形文化財（古文書）に、深沢家屋敷跡（土蔵などが残る）は史跡に指定されている。