Shhhhh! The so-called Palestinians will claim the building as being built by their ancestors and move in.
If the Canaanites, Philistines, or one of the empires (Elamite, Akkadian/Assyrian, Babylonian, Persian, Hellenic, Roman, Byzantine, among other pre-Islamic powers) were still around, the Palis would be claiming they had no historical presence in the area.