The Landlord doesn't care what is done with the building as long as it's done to code by a licensed contractor. 95% chance to pass accreditation 

It can only protect you if you are honest, a landlord who keeps health and safety codes up, you have great insurance, you never mix the money, and you are lucky.

Will people tell you how and why (I didn't do anything fancy, its just how the tax code works)? 

When someone passes away, the assets within their estate are subject to estate taxes if the total value of their estate exceeds a certain threshold (this amount fluctuates based on tax code, so be sure to consult a professional).

George).I’ve read about this market and the code for zoning in St.

Know your local zoning laws, building codes, and licensing/permitting regulations.2. 

I'm even wondering if the landlord can legally have rentals that have no addresses,  we'll I have an address:number/Street name/Zip code.

New construction will not be the identical house since everything in the house would be new and the house would be built to modern building codes.

Non-judicial foreclosures involving junior federal tax liens are governed by another section of the US Code.

I would check out zip codes such as 44102, 44111, 44109, and 44125.