Changing address on business that should be SAB, but isn't

[SocialSpark]

I have a Tree Service client who came to me with an existing GBP that used his home address. He wanted to start doing local ads, so, fearing a loss of ranking or suspension if I changed it, I left the address alone. Now, 2 years later, the client is getting a divorce and has moved from the listed home address (where his wife and child live). Now, I have to change the address, and switch him to an SAB, which I fear will trigger a suspension. He has a "shop" where he keeps his equipment, but he doesn't get mail there. He has moved to another house, but I don't know if that's permanent or not. I recommended he get his DBA or LLC, insurance, utilities, etc, updated to match the shop address, which is obviously going to be a pain in the neck. Does he need to change the LLC address with the state, or do you think updating the rest of the documentation will be enough? If I call the Local Service Ads support line to change the address there first (before the GBP) will that prevent suspension? Any other recommendations?

Thanks!