In certain circumstances, apartments may become exempt from rent stabilization coverage temporarily or permanently.
Over the years, we commonly see this as temporary exemption when a building employee occupies the unit. When that employee leaves the unit, or leaves his/her employment, the unit would return to rent stabilization coverage.
The most obvious question is what would be the unit's rent when RS coverage is re-established ... would it be the legal rent as if coverage had been continuous over the years, or would the legal rent be the rent at the level it was when the unit became exempt?
Permanent exemption could occur when a unit was occupied by the owner and his/her immediate family.
To start, see this thread:
viewtopic.php?f=3&t=13978&p=58858#p58857