Emotional Support Animal Exemption?

[Kevin Oberlin]

I'm noticing that some websites post that a landlord may refuse a ESA request if the following is true:

"Single-family homes that were rented out without using a realtor. The
owner of the home cannot own more than three single-family homes."
(Source: https://www.thebalancesmb.com/...)

Does this really apply to ESA? Other more substantial sources appreciated.

Any experience/thoughts on this?