Emotion Support Animal questions

[LeeAnn Doppel]

I am looking for new renters for a condo (Salt Lake County Utah)  that I just had repainted and re-carpeted.  My ad says No Pets. The 4th applicant just contacted me by email asking " Would you be willing to allow pets (one calm dog) if half or all of the deposit is non-refundable? I can also pay a pet deposit and pet rent if needed." Before i could reply she sent another message "I can renew the emotional support animal (with a therapist)".

I know I can not deny her the rental based on the ESA. It is a 40# dog. My condo is 2nd story with no place the dog could potty accessible unless they take it on a walk in the complex. No fenced area, etc.  

My question is: can i require that the dog can not potty in my condo/patio except when on walks outdoor in the common areas? I do not want them to use peepee pads or pee stations as I've had dogs myself and know they can go close to the edge and/or overflow. 

Can I require the dog to have current vaccinations? 

I don't want to break any laws. 

Thanks everyone!