Sweet, gotcha. If you have fewer than 5 properties, you are basically in the clear. If you have 5 or more, Fair Housing, ADA, DOJ OCR, etc come into play. There’s simple one page form letters that are extremely easy to get for Emotional Support Animals. This is what you will see 95% of the time, some legit, some not. Tenants know it’s an easy way around no pets/ pets deposits. You can’t charge a deposit or ban the animal. Service Animals are treated the same I.e. fair housing, but are a much more stringent program. “Real” Service Animal have very extensive and often expensive training to do specific tasks for the disabled person. No one with a “Real” service animal would have a need to try to buffalo you about it.