This is a report on the contents of the information method sharing between the designers and the building owner to renovation to lease apartment rooms and facilities “while using”. The line of the rooms, which connected to a vertical pipe, is the smallest unit of the construction. The tenants in the line with the most vacancy are moved, and the renovation is carried out as the 1st construction. And other tenants moved to the renovated rooms and renovate the line as the next. And the construction procedure to repair while keeping the lifeline was examined by repeating.
