Regardless of how much you invest, your risk is spread among a broad base of loans, allowing you to track overall averages rather than luck, plus you eliminate (or, more accurately, minimize) cash drag.  

Determine what you would be willing to pay.....while not really accurate in most cases, maybe just start with tax appraised value or some % of that is what you would be willing to pay.   

But there is an important benefit: As a new flipper you will have a hard time underwriting your transactions accurately.

They are accurate and inaccurate.

D-U-N-S, which stands for data universal number system, is used to and maintain accurate and timely information on +265M global businesses."

Just trying to look for something accurate. my market is multi families in nyc. 

Michelle,In the NYC market, i think our best search resource is Streeteasy, it's the most up to date and provides the most accurate historical sales data. 

Is this accurate?

I provided a recent appraisal with accurate estimates of replacement cost, which has been updated to match that estimate.

This will provide you with a more accurate picture of your potential ROI (Return on Investment).