Seegert is an avid landscaper and gardener, resulting in the most beautiful house on his block.

Dr. Seegert is an avid landscaper and gardener, resulting in the most beautiful house on his block. This increases property values on his street, resulting in a positive consumption externality for his neighbors. Below is a graph of the private and social benefit and private cost of Dr. Seegert's gardening. Calculate the deadweight loss caused by this positive consumption externality.