Q.-I own and lease six single-family houses and prohibit pets in all of them. A tenant who uses a guide dog applied to lease one of my houses. If I accept him as a qualified tenant, will I have to allow the animal on the property?
A-Yes. The Fair Housing Act requires property owners to allow tenants to have assistance animals, including emotional support animals, on the property. There is an exemption for single-family housing sold or rented without using a broker if the owner doesn’t own more than three single-family houses at one time, but that wouldn’t apply in this situation.
You are allowed to ask for certain information once the tenant has requested a reasonable accommodation for the assistance animal:
Note that a property owner cannot require a tenant to pay a pet deposit or any other additional deposit as a condition for allowing an assistance animal in a rental property, but a tenant with an assistance animal will still be considered legally responsible for any damage caused by that animal.
https://www.texasrealestate.com/advice-for-consumers/article/do-i-have-to-allow-assistance-animals-in-my-rental-homes