Factual error: When Chuck discovers the dry rot, he tells the Persons that he played 36 seconds for the Lakers in the 1986 NBA Finals. The Lakers weren't in the 1986 Finals.
Factual error: The crescent moon above the window of the house in one brief showing is fake. The shadows throughout the film indicate if looking towards the front of the house, you're facing north. The moon in North America is not in the north part of the sky.