Rental units on a two unit property where one unit was, on December 31, 1979, and one unit is, currently, the principal residence of a 50 percent owner of record, are EXEMPT from rent stabilization AND good cause for eviction requirements, and need not be registered with the rent board. (See Regulation 13.76.050)

Needless to say, people have sometimes gone to great lengths researching the status of their property at the end of 1979!