CEBBLOG
March 27, 2019
"Neither Cal Rules of Prof Cond 1.16(e)(1) nor California case law addresses the length of time an attorney must retain client papers after completion of the client matter if the client doesn’t request their return. There are different approaches to the problem."
https://blog.ceb.com/2019/03/27/how-long-do-you-have-to-keep-client-files/#more-23049