Found desirable properties after driving for dollars

[Julius Dixon]

Hey Guys - 

I've identified properties that I'd like to find out more information on / make offers on (they need work but are in a desirable neighborhood in my opinion). How should I go about figuring out who the owner is and getting the necessary information from him / her that I will need to make an accurate offer? Owner information isn't listed on Redfin /Zillow, etc. How do I get him to give me that info?

The properties that I have found are in San Francisco where I live.

Thanks,

Julius