NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) is pleased to announce the assignment of preliminary ratings to 19 classes of the JPMBB 2015-C30 transaction (see ratings list below). JPMBB 2015-C30 is a $1.33 billion CMBS conduit transaction collateralized by 70 commercial mortgage loans secured by 150 properties. The underlying collateral properties are located in 32 US states and one Canadian province (0.1% of pool balance), with no state representing more than 10.0% of the pool ba