So I am exploring wholesaling and was told that I could not sell more than 5 houses in the course of one year in the state of michigan without a license.

So while data may be true or applicable to them, it may not be to you.

I know that Privy is planning on adding an analytics tool for STR based on Airdna data, but we'll see how robust that is.

I've a firm believer that email is not a data repository nor a task manager.

I'm still exploring the website!

It's easy to search on Redfin/Zillow with the keyword "ADU" now.I found some recent transactions data (almost all from second quarter of 2021) in the bay area that might be of interest to you: https://www.redfin.com/CA/Camp...https://www.redfin.com/CA/San-...https://www.redfin.com/CA/Sant...https://www.redfin.com/CA/Sunn...https://www.redfin.com/CA/Sant...https://www.redfin.com/CA/San-...You can see that in all of these cases (whether with detached or attached ADUs), ADU added more value than the estimated construction cost, which shows that building an ADU can be a proven strategy for bay area home owners to not only improve cash flow, but also immediately add equity value.

Just want to explore my options.

If you are willing to pay a decent amount for good data and lists that aren't as easily affordable as what someone who can afford Propstream could get, then there is Audantic, which the folks in my master mind has good data/lists.

I'd check with other data resources to confirm your assumptions. 

I have also explored the possibility of subscribing to a virtual CPA platform.