Greg Traywick, Cooperative Extension director for Cleveland County, agreed that it's rare to find the birds living in an old house. It has happened before. Vulture Culture Online said that sometimes the birds choose to put their nests in buildings.
Vultures look for dark secluded spots or places like cavities of an old or dead tree.
They build somewhere there is a depression. The eggs were on a mound of bark, soil and other debris. It had to be vultures. The next time he discovered the parents when a large black vulture flew out the window. The vulture Padgett saw was the American Black Vulture.