Remember, the federal government does it's due diligence...this is a very structured process. 

As a landlord it is your responsibility to know the laws that govern your business.

Given, inspection and government watching over your shoulder may be a slight deterrent.

I don’t think that the ADA governs ESA, but a service dog such as a seeing a Eye dog are.

Inspections with now problems. https://www.kansascity.com/news/politics-government/election/article216232395.html

So these are already decent size houses and the jobs are already there mostly through the NAVY and the government.

Luckily, there are several options you have, depending if the house is privately owned or belongs to a Bank or the Government. 

The National Association of Realtors® is the second largest lobbying organization in the country, I suspect they would throw all their cash reserves at trying to prevent this kind of thing, but there is also a good chance Amazon's model would resonate with local governments as a way to boost the economy as not paying 5-6 percent to sell would increase a homeowner's discretionary spending money and increase the collective net worth of homeowners to the tune of hundreds of billions dollars.

Remember - FHA and VA are government programs, so they are more about fostering home ownership than investment.  

@Brandon IngegneriProvided you are no longer working for the government, you may be able to transfer your 457 to self-directed IRA.