Now new research presents credible estimates of the total parking supply in several American cities for the first time. The report from Eric Scharnhorst at the Research Institute for Housing America, an arm of the Mortgage Bankers Association, provides city-level evidence of the nation’s massively overbuilt parking supply and the staggering cost to the public....
Scharnhorst used satellite imagery and tax records to tally on-street parking, surface parking, and garage parking in five cities: New York, Seattle, Philadelphia, Des Moines, and Jackson, Wyoming. The method can be replicated to measure parking in other cities, he says.
It’s not an exaggeration to say American cities have been built for cars more than people. “After decades of requiring parking for new construction,” Scharnhorst writes, “car storage has become the primary land use in many city areas.”
In Des Moines, for example, there are 18 times as many parking spaces per acre as households — 1.6 million parking spaces and about 81,000 homes. In Philadelphia, there are 3.7 times more parking spaces than households. Of the five cities, only New York has more households than parking spaces, and New York still has 1.85 million parking spaces.