Do I need a "local address" in out-of-state areas where I invest?

[Stephanie Windemuth]

Wondering about having an "in-state" address in the states in which we invest buy-and-hold multi-family properties.  We have LLCs in those states (with a registered agent) but used our "actual" business address here in Washington as the "primary physical address".

Should we establish an address (with forwarding service) in each state?  What are pro's and con's of having a "local" (in the distant state) PO Box address for giving out as the business address?