… back in 1972, nearly a third of all multifamily homes were constructed in buildings with two to nine units—a typical size for lowrise apartment buildings. Significantly fewer, about a fifth, were built in very large structures with over 50 units. Small apartments peaked in 1981, with 46 percent of all new multifamily units.
Since then, though, they’ve fallen off a cliff.
In 2014, just seven percent of new multifamily homes were in buildings with fewer than 10 units. But nearly half—48 percent—were in buildings with 50 units or more.