There are now 9 million more renters than there were just a decade ago, the biggest jump in renters on record, and they are paying more for rent than ever before. Of the nation's now 43 million families and individuals who rent, 1 in 5 are considered "cost-burdened," or paying more than 30 percent of their incomes on rent, according to a new study by the Harvard Joint Center for Housing Studies. Others pay half their incomes. "The crisis in the number of renters paying excessive amounts of their income for housing continues, because the market has been unable to meet the need for housing that is within the financial reach of many families and individuals with lower incomes. These affordability challenges also are increasingly afflicting moderate-income households," said Chris Herbert, managing director of the center.



Adding to the crisis, the number of "severely" cost-burdened renters, those paying more than half their incomes on rent, went from 7.5 million to 11.4 million in the last decade. This, as renter incomes have declined 9 percent since 2001. Add it up, and 49 percent of renters are cost-burdened, 26 percent severely so.

Demand has clearly outstripped supply, despite a recent boom in apartment construction and a 35 percent jump in the number of single-family rental homes since the housing crash. Multifamily apartment starts are up. "Record-setting demand for rental housing due to demographic trends, the residual consequences of the foreclosure crisis and an increased appreciation of the benefits of being a renter has led to strong growth in the supply of rental housing over the past decade both through new construction and the conversion of formerly owner-occupied homes to rentals," said Herbert.

But it is not enough. Rental occupancy is at the highest level in 30 years, and monthly rent rates are at record highs — and still rising at a sizable 3.5 percent annually. While there is a wide swath of single-family rental homes and smaller multifamily buildings in the suburbs, much of the recent multifamily construction has been large, luxury buildings in urban centers. Upper-income renters are finding what they need, but low- to middle-income families are struggling.

Homeownership is now at the lowest level in half a century, and some expect it could go significantly lower. Household formation is expected to continue its slow rise, but almost entirely on renter households, not owner households.

"These market conditions will likely continue in 2016, as newly built apartments are absorbed by demand from new, young households. Look for rental vacancy rates to remain relatively low and rent growth to outpace inflation in 2016," wrote Frank Nothaft, chief economist of CoreLogic, in a recent report.



