|by Shannon Rieger|
According to the ACS data, the nation's stock of single-family rentals grew from 12.2 million units to 16.1 million units in 2016, with virtually all of the growth (99 percent) occurring between 2006 and 2014. This 32 percent increase in the single-family rental stock far outpaced the 11 percent increase in the nation's stock of multifamily rental units, which grew from 26.0 million to 28.9 million between 2006 and 2016.
As a result, single-family homes now represent more than one-third (34 percent) of the rental stock nationwide. Additionally, the growth in single-family rentals has provided an important source of housing for families with children. In fact, single-family homes accommodated 84 percent of the growth in renter households with children between 2006 and 2016.
However, most of these new rental units were not new construction. According to our analysis of data collected by the US Census Bureau, between 2006 and 2016, only 366,000 new attached and detached single-family homes were built as rental units. This, in turn, indicates that about 3.5 million of the single-family rental units added to the stock 2006–2016 were existing structures that had previously been owner-occupied homes.
This trend of converting single-family homes to rentals was unevenly distributed across the country, with the greatest increases occurring in the states with higher than average foreclosure rates, according to JCHS analysis of data from the Mortgage Bankers Association and the ACS (Figure 1). For example, between 2006 and 2016, Nevada's stock of single-family rental units grew by 63 percent—faster than any other state in the country. And the foreclosure start rate in Nevada peaked at 3.8 percent in 2009, the highest rate of any state 2006–2016 and more than double the nation's peak rate of 1.4 percent.
Arizona and Florida also experienced particularly high foreclosure rates and unusually large increases in their stocks of single-family rental units. Arizona's foreclosure start rate peaked at 2.6 percent in 2009, and its single-family rental stock grew by 61 percent between 2006 and 2016. Florida's foreclosure start rate hit a high of 2.8 percent in 2009, and its single-family rentals grew by 50 percent int he decade leading up to 2016. While these data do not tell us exactly how many of these homes completed the foreclosure process and were subsequently converted to rental units, they do suggest that, as many have reported, large numbers of foreclosed homes were bought by investors who converted them to rental units.
Note: Single-family rentals include detached and attached single-family homes. Stock estimates include renter-occupied units and units that are vacant for-rent. The MBA National Delinquency Survey reports the rate of mortgage loans that are in foreclosure as a percentage of the number of loans serviced during the quarter. The survey sample includes about 85% of the US market for first-lien 1-4-unit mortgages.
Source: JCHS tabulations of US Census Bureau, 2006 and 2016 American Community Surveys, and Mortgage Bankers Association National Delinquency Survey, compiled by Moody's Economy.com