Help, I can't get inside to see the repairs needed.

[Nadine McEachnie]

I have an individual interested in possibly selling her property. She currently rents it and the tenant will be out in October. She  is unable to provide me access to the property. I asked her for the repairs needed and she does not know.  How do I know the cost of the rehab if I can't go inside to see for myself?   What should  be my next step ?