How long should client files be maintained?

A difficult question facing lawyers is how to manage client files. While it’s not
possible to answer the question with a few simple statements, we’ve put together an
informal guide on Best Practices for Client File Retention and Management (March
2010). 

Other considerations include the lawyer's obligations under the Rules of Professional Conduct and the disposal of sensitive information.

Safeguarding Property
RPC 1.15A

Trust Account Records
RPC 1.15B

Disposal of Personal Information
RCW 19.215