NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency (KBRA) has assigned preliminary ratings to six classes of Progress Residential 2017-SFR1 (Progress 2017-SFR1) single-family rental pass-through certificates. Progress 2017-SFR1 is a single-borrower, single-family rental (SFR) securitization that will be collateralized by a $370.8 million loan secured by first priority mortgages on 2,080 income-producing single-family homes. The fixed-rate loan will require interest-only payments and have a fiv