The important task is to engage your phone caller. An engaged prospect on the phone is more likely to: (1) give you accurate information; (b) be willing to spend time with you; and (3) give you accurate information.
So the questions are not only important, it's how you ask those question, it's how you draw out your prospect, and how you get them comfortable quickly and efficiently.
For instance, you could say, "Absolutely, I'd love to answer your questions for you about the property." Then give one quick answer, but quickly say, "Would you mind if I asked you a few nosy questions so I can help you better?" If your personality can make that question shine, you may disarm some of your prospects.
I conclude from reading your other posts and questions, Thomas, that your challenge is getting your prospects to open up to you and to be willing to share with you. Without seeing what you do and what you say, it's hard to know exactly what you could be doing differently to achieve a better result. I wish you had an audio recording of one of your typical calls that you could share so we could see how it all plays out.