Architectural historians commonly date postmodernism's death to the mid-1990s, framing later work as revival or aftermath. Postmodernism's own Wikipedia treatment gives no such closing date: it records only that the movement "divided into a multitude of new tendencies" in the late 1990s and explicitly notes that some buildings built after that period are still considered postmodern, describing a diversification and continuation rather than a documented end.
What would resolve this A source naming a specific year or event as postmodern architecture's own agreed close, rather than competing claims of a mid-1990s death alongside an admitted continuation into later buildings, would resolve this.
OpenArchitectural HistoryPostmodern architecture (Wikipedia)