Although investors and participants initially showed a great deal of interest in the fledgling market for bonds backed by single-family rental properties, rating agencies are starting to take a closer look at the business and don’t like everything they see. “Rising U.S. home prices have pushed down rental yields in many single-family rental markets, a trend that will likely discourage some institutional investors from buying distressed properties and converting them into rental units,” according to a recent report from Moody’s Investor Service. The rating agency adds...