No, which is why there are very few vacant units in NYC: 1.4%-ish percent of total supply, whereas the rule of thumb I've heard is that around 5% is the sign of a reasonable equilibrium.
(In a well-functioning real estate market there are some units offline due to vacancy, turnover, and renovation, so we don't expect 0%. High vacancies of e.g. 10% suggest insufficient demand for the supply.)
(In a well-functioning real estate market there are some units offline due to vacancy, turnover, and renovation, so we don't expect 0%. High vacancies of e.g. 10% suggest insufficient demand for the supply.)