In my opinion there will probably never be a national society for preservation of significant buildings unless there's legislation such a society could rally around and there don't seem to be the votes in getting that sort of thing through the legal processes. Out on the western edge of the spiral galaxy known as the city of Buenos Aires I know of at least three separate campaigning groups - one to each barrio - and none of them seem to work together.Preservation "Societies" do nothing. There are only two things that can preserve historic buildings-
Cash and Government Regulation.
There are already several groups that agitate for Preservation. "Societies" if you will. But without government regulation, prohibiting the demolition of important buildings, Societies can do nothing, unless they are rich enough to buy buildings outright.
Many privately owned buildings appear to be protected- until the day they are not.
A few important buildings are owned by the City, and are used as museums or government offices- but seldom smaller residential or commercial buildings like these.
Another contentious issue is of political involvement . Small political movements can gain a lot of publicity from attaching themselves to a preservation campaign and they seem to be trying to push themselves into such groups with increasing regularity. The trouble is that when, say, the "Anarchists for Euthanasia" party start making a lot of noise and getting a lot of publicity about how they want to save the Tamagochi Building or whatever, the other 98% of residents who would never want to be associated with AforE just walk away and the campaign collapses and the building comes down. Why, it's almost as if the property developers themselves are creating objectionable political factions for this very purpose.