America is running out of apartments

America is running out of vacant apartments. 
Rental-apartment occupancy in the US reached 96.5% in the third quarter, according to RealPage, a provider of property-management software.
That's just under the all-time peak of 96.8% reached during the tech boom in 2000, according to the firm. 
The flip side of occupancy — vacancy — also shows a strained picture. According to the Census Bureau, the rental-vacancy rate remained near a 30-year low of 6.7% in the second quar