Local San Diego Wholesaler -- Question about Market Values!!

[Gabriel Romero]

I am a new wholesaler in San Diego and I was wondering if any of the agents can tell me about finding what property values surrounding a potential investment should be.  How can you find accurate, and I mean very accurate, comps in the area?  Should I ask neighbors in the area? Talk to local agents?  You can probably tell just by my questions that I need guidance.  Any of your feedback is greatly appreciated.  I focus in finding deals through probate.  Thanks!!