That being said the market is crazy everywhere right now and will likely be the case for the next few quarters, IMO.

You would break the all the costs of the property into fourths. 1/4 is your primary (depreciation and other expenses don't factor in) and the other 3/4 is a rental.

We are in process of extending into Florida, Virginia, New Mexico, Washington, and Oregon by the end of this quarter.

Fourth, start networking with local investors and like-minded individuals.

I am an appraiser in Houston and most areas a typical 400-500 sf quarters adds ~25k to most neighborhoods and the really nice ones in higher price point neighborhoods add somewhere between $40k-$75k.at the end of the day, the appraiser will likely do their best to bracket the adu as an additional amenity with another similar comps with an adu or find another with similar amenities.

It's the worst or best (depending on your strategy) boom and bust real estate market in the world.The explosion of the last bubble during the financial crisis was much worse than the US, with some properties losing three quarters of their values.

(This is often done on a monthly or quarterly basis) Syndications are often 5-7 year commitments, so it is important to know going in that you will have access to the sponsor if you have any questions or concerns about your investment.

Then add an office and living quarter to the Storage location to live at. 

Hasn't anyone dumped the quarters on a table and wrapped them in the $10 papers and counted that? 

If it is available, they are usually updated quarterly.