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Introduction and overview


Since both housing and transportation issues have reached crisis proportions in the Bay Area, it is crucial that we re-examine our basic assumptions about parking requirements.

New research and previous studies indicate that:

  • Parking is one of the most significant barriers in the housing development process
  • Minimum parking requirements typically do not reflect actual car ownership rates 
  • Minimum parking requirements increase development costs, typically by $20,000 to $30,000 per unit 
  • Minimum parking requirements reduce housing production and the amenities which developers can provide residents 
  • Affordable housing developers are often required to build more parking than the building residents need

This site and two publications (available here) are 3 complimentary tools for the planners, developers, advocates, and public officials to use in order to communicate the impact of minimum parking requirements on the affordability and availability of housing and improve planning and policy around residential parking.  For more background on this research, see About.  For a more detailed site outline, go to Contents, otherwise, go straight to one of eight sections of this site:


Vehicle Ownership and Trip Generation Data
Assessing and Communicating the Costs of Parking
The Housing Development Vehicle Ownership Model
"Unbundling" Parking and Housing for Fairness, Efficiency, Units, and Savings
From Parking to Transportation, "Transportation Management Plans"
Reasonable and Necessary Policies for Smart Parking Planning
Case Studies and Other Examples of Good Parking Planning and Policy
Other Resources for Parking Planning & Policy
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