You may group such expenses into a single category under "Other expenses."

Does that mean I should look for a approved by CA stamp, even for a US/canada modular provider? 

I am now approaching 115+ days since assignment on my first 3 deals and because I am in NYS, my attorney tells me that I cannot even speak to buyer’s or seller’s attorneys due to “breach of contract”.I lost my first deal in fact because we were hindering on 130 days since assignment (should have been long closed) and the city decided to demo before we closed and were able to takeover in court.

Even if you create a non-CA LLC, if you are managing the business from California, you will likely be deemed to be "doing business" in California and therefore likely subject to CA taxes.

Almost exact same graph for single family home prices for same time period. 

Sounds like a single family home with an attached garage which to me sounds like it could be R-1 single family only residential where you are unlikely to be allowed to add additional units unless you're in a state  forcing municipalities to allow ADUs of some sort.

Done right and you live with little to no out of pocket expenses possibly even make a.few bucks, you realize some equity and leverage the equity down the road for your next investment.  

I would love to connect to exchange ideas and even see if there are ways we can help each other. 

Or, is it smart to have your job, all your real estate, stocks and everything in one single country and at the whim of a single government?

Even facebook might have some good local groups for you.