Detached: A separate structure like a tiny house, guest house, or mother in-law suite in the backyard.2.

Consult with a tax advisor or attorney familiar with both partnership law and real estate to ensure compliance and minimize tax liability.Once under a TIC structure, 1031 exchanges for individual members could allow them to reinvest proceeds from the sale of properties into new ones without triggering immediate capital gains taxes.

For the office, it is advisable to begin with home office deduction if one meets the requirements of the law.

I don't know Ohio's laws regarding disclosure, so it sounds like that may not be applicable. 

By law we would have to disclose any type of relationship, ownership or affiliation with third party services.

Anti-money-laundering laws are largely to blame.  

To give you something as a reference based on your budget (30-40% down with $1.8M), the general cap rates you will see in the Bay Area are roughly 3-5% https://www.loopnet.com/Listing/1047-Rich-Ave-Mountain-View-...https://www.loopnet.com/Listing/1180-Saranap-Ave-Walnut-Cree...You will find higher cap rates and more 20+ units buildings in SF, Oakland, and Richmond, but keep in mind of their stringent tenant laws. 

There is an implied covenant of "quiet enjoyment" by law that can be enforced.

If we are strictly talking about cash flow, I'm cash flowing more from my HYSA and index funds - my net income is $71 a month on this SFH.  

The guilty people know how to hide their tracks and could have been arrested under previous laws anyway, so all CTA law did was persecute small business owners.