Local Capitalization Rates

[Jonathan Hardy]

Hi Everyone,

I have a question about capitalization rates. I'm think I'm comfortable with calculating the Cap rate for a single multi-family property:

Cap Rate = Net Operating Income / Value

What is the best ways to determine the Cap rate of a particular market? Do investors typically ask a real estate agent or broker for this information, or is there a way I can get this information on my own? 

Thanks!

Jon