They're reliable and trustworthy.

@Bridgette Packer- I have use a trust worthy guy that is local.  

Some states also require state residency.Real Estate Education: You must take certain classes required by the state, at a state approved educational institution.Exam: You must pass the real estate broker's exam.Trustworthiness: You must submit evidence of your trustworthiness.

From my experience with Cameron Dunlap, he has been around on YouTube for several years and seemed like a very trustworthy person.

But to be frank, CA's trajectory is impossible to replicate as working remote has become more prevalent, companies more “decentralized”, and more people think about not just professions, but also lifestyles these days).Are you able to find trustworthy realtors/PMs or even service providers?

This is the lazy approach but buys you time to find your next trustworthy accountant.

That being said, I know that California compared to other states is very high priced, and if it's advantageous to you and your situation to invest outside California, then I would make sure that you get in touch with some trustworthy people in the states that interest you, and build relationships with those people to gain the local knowledge to apply towards investing in good areas.

People interview and screen their tenants, realtors, painters, contractors, etc, for competence/trustworthiness/etc. 

I learned this the hard way.Chances are if they have jobs, good credit and no previous issues with rentals or foreclosures, they're going to be trustworthy.

Start small with projects until you can build a trustworthy team.