The mound is single and the moat is double, and the width of the building remains is approximately 11 meters and the outer moat is approximately three meters deep and is thought to have connected with the Iruma-gawa River.
土塁は一条、空堀は二重になっており、館跡北東の幅約11メートル、深さ3メートルの外堀はかつて入間川と繋がっていたと思われる。