NEW YORK–(BUSINESS WIRE)–Kroll Bond Rating Agency, Inc. (KBRA) is pleased to announce the assignment of preliminary ratings to 15 classes of the UBS 2017-C1 transaction. UBS 2017-C1 is a $959.0 million CMBS conduit transaction collateralized by 67 commercial mortgage loans secured by 134 properties. The properties in the collateral pool are located in 27 states, with only California (28.5%) representing more than 10.0% of the pool balance. The pool has exposure to all of the major property ty