Tiny-apartment hunters might have better luck in the 21st century than the mayor did in mid-to-late 20th. That’s because the “micro-unit” mini-apartment is coming to New York City, part of a bid by the Bloomberg administration to create more housing for single people and small families, and to curb the illegal subdivision of bigger dwelling spaces into smaller ones. Today, the mayor launched a pilot program that his administration has dubbed adAPT NYC. Jerilyn Perine, executive director of the Citizens Housing & Planning Council, said that rules favoring larger apartments arose in the 1950s, thanks to the suburbanization of America, and the growing size of homes there. “And so the idea was if you want to keep your middle class, if you want to keep families from moving to the suburbs, bigger and bigger and bigger,” she said.