CA's Secretary of State forms list the name and address of either a manager or member, so unless you're hiring a third party to serve as manager of your LLC, anonymity is very hard to achieve once filing publicly in CA.As to the probate part, you're right that going through a court probate is a huge hassle, including being expensive and time consuming. 

I also am happy to give them a chance to explain so we can build trust. 

You have to fill out something on the property page and they send you postal mail to your address to which you have to enter a code.

Never heard of them but trust your gut!

Imagine investing in all new, beautiful finishes, only to discover that the drain pipes are faulty and need to be replaced—an issue that could have been identified and addressed beforehand.

More than a tax strategy, these are education planning tools, and they need to be addressed in a broader context than just taxes.

You may be able to confirm their most recent address through some online resources like whitepages.com or on their credit report and then look up the owner.

Propelio is especially popular in Texas, so if you're investing in areas like Dallas, Fort Worth, Plano, or Frisco, it’s worth exploring.Public Property Records: County appraisal districts (CADs) often have free online tools to search properties by owner name or address.

I guess the seller would like to address that in the agreement.  

Quote from @Damon Albers: Hi Chris, Not sure you have the correct address.