I had two in a renter friendly state previously (one went without a hitch, the second not so much), I wouldn't look to repeat that experience.  

One of the best ways(not the most exciting) is cold calling owners.

I was debating if I should partner with a friend or family member who is willing to work on a property together. ill be sure to make sure things are done legally and fairly so no one get short sighted and things don't get messy.

How many people have the idea of buying a duplex to live in one side and rent out the other?

I sold one fairly quickly for a profit, only because it didn't quite fit my portfolio.

Gary Keller has a great investment book from years ago that was one of the best books I read.

Passive income through real estate is one of the most powerful ways to build generational wealth.

The ones that read like an advertising piece go nowhere. 

Realtor and Title company were very aware there was an ADU. thank you so much.Neither one of whom (realtor, title company), pass judgement on the legality or code compliance of an ADU. 

When it comes to the 203k, just make sure you have a contractor start date scheduled, and be sure to contact your consultant (if you have one and its not a 203k limited) to get the first draw scheduled.