Phil is trying to sell the house next door to a couple. In order to make the house as desirable as possible, he wants to put his family’s best foot forward. He wants the buyers to want to live beside his family. So, he has the kids outside gardening. This demonstrates adverse selection, signaling and the importance of spillover effects/positive externalities. Good, helpful neighbors are desirable and can increase a property’s value, especially if they take good care of their yard. Thus, there are positive externalities associated with landscaping. To discuss signaling and adverse selection, consider that someone is less likely to move if the neighbors are good than if they are bad. So, it’s entirely reasonable to consider the housing market as being characterized by adverse selection. Phil is doing all he can to signal that he and his family are good neighbors in order to get the couple to buy the house and to pay a high price for it. But are they good neighbors?
At the end of the scene, you’ll see the other possible new neighbors. It’s clear which family each of the Dunphys would prefer to live nextdoor.
See more: adverse selection, externalities, housing markets, negative externalities, positive externalities, preferences, private benefits, private costs, self interest, signaling, social benefits, social costs, spillover benefits, tradeoffs