The New York Times Real Estate section recently featured an article on an increasingly common feature of the “sharing economy,” communal apartments where the landlord rents out individual rooms rather than the entire apartment. These arrangements, while convenient for some tenants and lucrative for landlords, seemingly violate long-standing City rules against creation of new single-room occupancy units a/k/a “SRO’s.” Any tenant renting a room in such a unit runs the risk of being vacated by the NYC Department of Buildings based on illegal occupancy.