The downtown parking freeze is one of three parking freezes in the City of Boston administered by the Air Pollution Control Commission. Established in 1976 under rules of the Massachusetts Department of Environmental Protection and the U.S. Environmental Protection Agency (40 CFR 52.1135), the downtown Boston parking freeze limits the availability of commercial parking spaces in downtown Boston.
The regulations for the downtown parking freeze was approved in 1978, and most recently amended them in March 2006; the regulations include a map of the freeze area. The downtown freeze applies only to commercial spaces open to the general public; residential spaces and spaces reserved for the use of a building's employees, customers, and guests are exempt or excluded from the freeze.
The downtown parking freeze allows a maximum of 35,556 public parking spaces in commercial parking facilities in the downtown freeze area. As of December 4, 2013 there are 109 spaces in the parking freeze bank, which can be allocated to new facilities. The actual number of facilities and spaces fluctuates as old parking facilities close and new ones open. The APCC welcomes and encourages informal inquiries from owners and developers.