Housing and Transportation Affordability Index
"The traditional measure of affordability recommends that housing cost no more than 30% of household income. Under this view, a little over half (55%) of U.S. neighborhoods are considered “affordable” for the typical household. However, that benchmark fails to take into account transportation costs, which are typically a household’s second-largest expenditure. When transportation costs are factored into the equation, the number of affordable neighborhoods drops to 26%, resulting in a net loss of 59,768 neighborhoods that Americans can truly afford. The H+T Index offers an expanded view of affordability, one that combines housing and transportation costs and sets the benchmark at no more than 45% of household income."
Text from: www.cnt.org/tools/housing-and-transportation-affordability-index