"'We’re not a category that exists,' she acknowledges. 'We’re in our 20s, we all have full-time jobs and yes, we live together.'"

In America, we call them "co-ops," and they've been around for quite some time.

"The idea dates back to the mid-1980s"

The co-op I lived in was built in the 70s, and there are co-ops that date decades earlier.