An op-ed opposing Los Angeles mansionization suggests owners of large homes don’t regularly use all that space:

In “Life at Home in the 21st Century,” UCLA researchers tracked 32 middle-class Angelenos, trying to measure and analyze how we live today. One family in particular they followed intimately, tracking how they moved around the house during the mornings, evenings, and weekends — when they were all home. The results were amazing: the family huddled around the kitchen and family room nearly all the time, leaving the living room, porch, and more than 50% of the rest of the first floor communal spaces almost entirely empty. The habit of gathering around the kitchen to eat, or huddling in front of the TV to watch, hasn’t changed much since the 1950s, but the average home size has — from 983 square feet in 1950 to more than 2,660 square feet today. Meanwhile, the average family size has shrunk and so has the average number of people living under one roof, from 3.3 in 1960 to 2.54 today.

See more about the book here. While the book appears to detail the heights of American consumerism (see this interview with one of the authors), it is interesting to consider how often rooms in a house are used. Are they really like office or store parking lots that tend to get used during certain work hours each day and then sit empty for more than half the day? Bedrooms operate that way during sleeping hours while gathering spaces – kitchens and family rooms – attract users in the evenings. Those hobby or storage rooms that are popular now – ranging from the man cave to a large closets – rarely see human activity. Could homes be made significantly smaller if the uses were combined or square footage was changed to reflect usage patterns? Or, should homes be built in a hub and spoke model around these key social spaces? On the other hand, American homes seem to privilege maintaining private spaces even if they aren’t used very much. The formal living room may be out but some homeowners seem to want private retreats (at least on TV, particularly in their bathrooms).

All of this gets back to you what homes are for in the first place. From decades ago to today, American homes often represent an escape from the outside world. A place to escape to with your family. A space where outsiders and the government cannot tread. Making such homes more communal is an interesting challenge when the homeowners need to be protected from forces outside the home.