facadism /fəˈsɑːd.ɪzəm/ noun2 •the practice of retaining only the facade of an old building when redeveloping a site.The Construction of new buildings behind historic facades, better know as facade retention or ‘facadism’, is a unique phase in the history of architecture. — 1991 •a method where the facade is designed and/or constructed independently of the remainder of the rest of the building.