And CA is extremely tenant friendly so it's not a great place for a rental. 

Not sure how common or widespread that is, but it has happened.   

This is a common theme across the country with many municipalities enacting similar restrictions including where I am located in Philadelphia. 

Paid off real estate cash flows extremely well.

Common deductible expenses include mortgage interest, property management fees, repairs, and even travel expenses related to property management.

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.The City of Detroit has 183 Neighborhoods we’ve analyzed.DM us if you’d like to discuss this logical approach in greater detail!

Buffalo is a great place to invest, but understanding that neighborhoods change extremely quickly is paramount to your success.

So when I hear other investors talking about how adding ADU's adds equity, you're telling me this isn't really a common experience?

Either way it would be a grey area, selling a house with a different amount of units/bedroom/bathroom seems extreme though. its an auction site, I have seen auction sites miss the fact there was additional lots in a sale.

You may want to live in a world of Wild West, anything goes business (I won't mention the orange haired political elephant in the room) but I assure you, your ignorant, uninformed, and weak defense of this sort of activity is not common.