Usually, I find them a great source of information.

Be greedy when others are fearful and be fearful when others are greedy" Do you have a source for the 40% figure?

I know what I think are the key indicators, and I think I have reliable sources of information, but I'd love if you could share some of what you look for when identifying growth markets. 

(The vacancy numbers are weighted by county specific vacancy counts, not a numeric average of county vacancy rates.)I put a link to the source of the data at the end.2019 Proj Total Population (& annual growth)1,255,325+0.86%2014 Proj Total Population1,203,7352010 Census Total Population1,162,386July 2015 Certified Population Estimate (NC only)1,190,4732010 Census Total Population: Urban627,87254%2010 Census Total Population: Rural534,51446%As for housing, the 2010 vacancy numbers reflect the impact of the Great Recession.

Hey John Thedford any idea where there is a source of contracts for all the other states?

For commercial deals how do I source them?

We took this path after finding various sources that claimed the commission reduction was possible.

I agree with @Jonathan Safa about sourcing your attorney on youtube.  

Do you have the source or authoritative case where that is cited?

I have contacted Brokers Realtors Friends Family and other obvious sources.