This must be a new world record:
Help is on the way for people looking for parking and green spaces in San Diego’s East Village, but, if the city’s plan to build a new garage and park comes to fruition, it won’t be cheap for taxpayers. A large portion of the project’s overall project cost will be for a two-level underground 185-space structure that will be built at an estimated cost of a little under $35 million — that breaks down to a cost of $188,374.49 per parking space.
Note that the Trolley is just 1 block away.
Systemic Failure 
Not surprising that it costs this much. In Boston, the City’s Transportation Demand Management planner was saying that the average cost of a single space in some of the parking structures was approximately 100,000. Many are apparently much more than the average.