If the duplexes and the single family are all on separate parcels you can insure them on separate policies.  

I did have the handy guy clean and dry off the area on two or three separate occasions.Moving forward to two weeks ago, they are complaining of mold and now sickness, I hired a property manager to deal with this. 

There is one book for 49 states and a separate book for California.

As a separate option, why don't you look into moving your retirement account(s) into a self directed IRA account (SDIRA) ? 

My advice is if at all possible when house hacking have the systems be in a separate utility room or you take the unit that has the utilities in them.

As a general rule, each entity that files a separate tax return (partnership, s-corp, c-corp, etc) will need its own QBO subscription.

There is one book for 49 states and a separate book for California.Software is a common question on BiggerPockets.

Hi @Rachel Payton, The house you are looking at purchasing, does it have a separate space set aside solely for the business or is it a "single family" type home that will just serve as a home office? 

Zillow cease working with Turbotenant as well, and my experience was the same as yours @Glenn Hoffman.Now I list on zillow separately by myself.

They are two separate things.