Are there separate entrances and exits?

You will be hard pressed to do this if you are spread through 4 separate markets.

I agree with @John Underwood that if you can get separates then do that.

As far as the 14.41% in TAT&GET taxes, Mike is right that guests do not like you requesting the additional tax separately so it is better to roll it into the price.

Properties with separate meters often have tenants pay; otherwise, it’s typically landlord-paid. 

Our lot size is 7300 sq ft and main house is 1700+ sq ft.Location: San Jose, CA- We were thinking to potentially design the ADU such that we could have a wall (or a door) that allows us to separate the ADU into a 1 bed/1bath for self use (or rental) and another part which could be rented separately on AirBnB as needed.

Separate checking accounts not required, but you need to maintain separate books and records.The TREC requirement is correct, but odds of enforcement seem low.

Ok, so I separated this one out (and I just found it) for those with a higher end rental.

Real Estate Professional status and Trade/Business are two completely separate issues. 

Is complete separation even possible?