Your policy can require, for example, that you are provided a current Veterinarian's report on the health of the animal; a letter or form from a "reliable" source such as a local medical or social professional verifying that the tenant has a "qualified" disability, and that the animal performs a specific task, or alleviates a symptom related to that qualified disability; tenant must clean up after the animal in common areas; no offensive odors can emanate from tenants residence; and both the vet report and verification of tenant's need must be updated annually. 

That would be a slower paced transition while still working full time, which is what I am looking for.

I first sold our small commercial building using a 1031 exchange and pulled a small cash boot from it to help pay for new medical and care costs.

And finally, and this is the big one that most miss, rent goes up every year (faster than inflation on long term average going back decades in LA) while a mortgage (the "P" and "I" portion of it anyhow) stays the same ("T" goes up slower thanks to Prop 13, and "I" goes approx with inflation). 

Slower and steady markets are usually not as exciting on the way up but there can be less dramatic adjustments.

My understanding is the animal is considered medical equipment.   

I live in Colorado Springs and have interviewed many homeless folks who confirm they are here for marijuana (only medical allowed here so far). 

In slower economies, we literally paid $10 for houses sometimes. 

FF is the most common and regularly used by travel medical professionals.

I had to file bankruptcy and I had to throw my rentals in with my medical bills.