Hi! I work in the South Hills and Washington County area and a majority of my business is rental. I am often asked this question, and "sellers willing to rent" rarely happens. The biggest reason is that the Owner needs the proceeds from the sale in order to move to their next home or that the ratio of rent/loan do not work.
If you would like to contact me directly at email@example.com or at 412-215-5717, I would be happy to assist you. Currently, I have one rental in the McMurray area and have access to others. I look forward to hearing from you!