THE PURPOSE OF THIS PAPER IS TO PRESENT THE NEW METHOD OF IMPROVEMENT OF THE RESIDENTIAL ENVIRONMENT （“REDEVELOPMENT”,“IMPROVEMENT”, AND “CONSERVATION”）. GENERALLY, AT THE BUILT UP AREA, THERE ARE A LARGE NUMBER OF INDIVIDUAL BUILDING ACTIVITIES BY LAND-OWNERS AND SO ON. THESE ARE ORDERED BY THEIRS AGREETMENT AND BY PROMOTION OF ADMINISTRATION (PROVIDE FUNDS, EASE BIULDING REGULATIONS…, ETC). WE CALL THE FORMER AS CO-OPERATIVE REBUILDING, AND THE LATTER AS PLANNED GUIDANCE. NOW, “CO-OPERATIVE REBUILDING METOD” IS A GENERAL TERM FOR THESE PLANNING METHODS.
