@Michael Ford Stuttgart is a great area (been there a long time ago doing work with Mercedes Benz).  

@Tony Leighty -  I always look to the quote from Henry Ford...."

It was so long ago that when I got there Richard Nixon was President, when I left, Geral Ford was!

Neither of those are "high prestige" positions like bank president, owner of the GM/Ford/Chrysler dealerships.

It was a Palms Place Penthouse which they later canceled on and did not buy, The Tom Ford Ranch on Russell, and my personal favorite the Palms Estate on Pecos across from Wayne newton's old estate.

Your tenant has no risk really, they get the place for the rent paid, the only thing left is the upside for them just for ding the right thing!

For me your D would be F = War zone,D would be section 8/low income,C would be blue collar/laborer - salary varies with localB would be as you said except again salary varies with geography.A would be as you said.There can be lots of overlap for D and F.

@William Robison I was wondering if you have to deal with short sales a lot using this strategy.

The Zoning Code rules and regulations for (D)ADU and Duplexes can be found here, Chapters 5-7. https://everettwa.gov/762/Zoning-CodeI haven't spent much time reading the Zoning Code yet, and will likely visit the zoning office to walk through items of interest as the need arises.

@Trever Ford,It makes no difference to me in NY if she chooses an agent in Ohio (I am not licensed there).