Not doing this can result in fines, and, worse than this, the LLC can be disregarded in a lawsuit if it is not from the State or registered to do business in the State that it owns property.

How do I file a small claims lawsuit against them without their new address?

If they don't follow through with the offer, then you can proceed with the lawsuit without further notice.In CA, you don't need a reason to end a month to month tenancy if proper notice is given (30 days, or 60 days if the tenant has been there for over a year).

If you fail to follow the rules, you may open your personal assets to a lawsuit.

Keep in mind E&O insurance typically doesnt cover you on your own deals, and most lawsuits against agents are on deals they were the buyer/seller on.

Lawsuits rarely exceed $500k, but when they do they might be $2-3million, so if you’re worth that, you want insurance for that much.

I did a sub2 recently that had a tenant that I had to evict (but took cash for keys eventually), a loan in foreclosure (that I reinstated), back taxes, and an HOA lien and pending lawsuit.  

The plan is to build an In-Law suite and rent a house similar to a duplex.

@Zack FrancisIf you're having trouble finding a duplex, you can also look for a SFH with an in-law suite or ADU.

I also look for lawsuits and see what happened in them.