We explicate how condominium ownership affects the conversion of right and facilities planning in redeveloped buildings. Results are summarized as follows. 1)The exchanges of right are diverse in each case, but the type of ownership is mostly simple condominium. 2)The use of floor in co-ownership is placed restrictions. On the other hand, the use of floor in condominium is complicated, and its location after redevelopment are concerned with them before redevelopment. 3)Some of commercial redeveloped buildings try adopting system that they can acquire wide open spaces in spite of independence in condominium.