In the old Victorian house, I stand warily next to the open front door as buyers climb the stairs to the floors above. Normally a realtor accompanies her clients through the house, pointing out features and answering questions. I am anything but a normal realtor. In fact, given my gifts, some find it unusual that I’m in a profession that requires me to show homes and help people sell them.

In this case, the home is vacant anyway, the spacious rooms empty of furniture and people and the belong...