Problems are extremely rare because they have systems in place for verifying the individuals identity first.

We're basically doing a different signup system that lets people have 1 identity and many accounts. 

They state that two US issued photo IDs are required, plus she will be quizzed on her US credit report as a means of verifying her identity.  

I bought it for 640k (likely worth 620k today based on identical floor plan that sold in the community).

I find it interesting to see how simple or complex other investors have organized their assets, and whether it’s similar to the path I’m on.I respect your points, and I’m not intending to suggest that all high-level professional advice conflicts entirely, rather just making the point that no two pieces of advice are identical in the tax and legal landscape, because it is obviously quite complex. 

August 2019; agreed to purchase an identical duplex a block away from last one.

I have several identical buildings, rented at different times.

Sell tax free, buy an identical property, increase the tax basis, generate the same cash flow. 

The identical  bedrooms are barely 100 sq feet, maybe even a few less than that. 

The Cook County Human Rights Ordinance: This ordinance prohibits people in Cook County (including employers, landlords, property managers, real estate agents, store and restaurant owners, bankers, lenders and Cook County government officials and employees) from unlawfully discriminating against or harassing other people on the basis of that person's race, color, sex, age, religion, disability, national origin, ancestry, sexual orientation, marital status, parental status, military discharge status, source of income (including use of a housing choice voucher), housing status, or gender identity.