When to get Pre-Qualified by a Lender?

[Carlos Rios]

Hi All, 

Quick Question, When is the right time to get Pre-Qualified by a Lender? I am currently looking in the market for a house hack in a very expensive market, the Bay Area. As I look at some of these high prices it is difficult to analyze any deals without knowing how much leverage I will be allowed. 

Additional Question, Any recommended methods on where to source a Pre-Qualification? 

Please let me know, thanks!