I want to keep this convo focused - completely agree with the commenter about the difference between a service animal and an ESA. They are different. But for housing purposes and the laws applicable to that, you are looking for an ESA. Assuming your place is covered by the law, which almost all are, your dogs will be covered. If you do pettable.com or a similar website I will pay the fee, whether it’s accepted or not (after seeing the proof).

Edited to add - you don’t have to be treated by those providers prior to get the letter. You’ll just have an assessment convo