I think it a Twilight  Zone show. It was a  movie where this lady is dreaming of a house she sees while driving. In the dream, she gets out and rings the doorbell and a napping lady wakes and comes down to see her driving away. One day she is driving and sees the house from her dream and it’s for sale. She buys it, went up to take a nap, runs down the stairs when she hears the doorbell and opens the door to see herself driving away