The publication Mansions Global, which I discovered only because I have a Google alert for anything mentioning Brooklyn Heights (which, along with stuff about our neighborhood, gives me info about a suburb of Cleveland, a poor neighborhood in Nashville, a pizza parlor in Austin, a drag queen popular in the D.C. area, and a race horse), has an article by Michele Lerner with the title “Are Brooklyn Brownstones the New Manhattan Co-op?&#…