UCLA Institute of Transportation Studies

This report synthesizes research on the impacts of parking infrastructure, the effects of minimum parking requirements, and the outcomes in cities that have repealed them. Parking infrastructure has negative impacts on urban design, environmental sustainability, and walkability, while increasing car ownership and driving. Minimum parking requirements contribute to parking oversupply and constrain new development. Research finds that eliminating minimums not only slows the expansion of new parking but also encourages adaptive reuse, supports more housing development in areas where minimums are removed, and expands housing options by enabling smaller units. Ultimately, the evidence indicates that repealing mandates facilitates more affordable, sustainable, and economically vibrant cities.