The adequacy of residential parking requirements: a comparison of demand and required supply in European cities

Abstract

Abstract Minimum residential parking requirements exist in most European cities to regulate the number of off-street parking spaces built for new or converted residential buildings. As minimum parking requirements can have various negative impacts, they are controversially discussed and increasingly complemented or replaced by maximum requirements in several cities around the world. This paper evaluates the adequacy of residential minimum and maximum parking requirements in 12 mid-sized cities in Germany, the Netherlands and Switzerland. By calculating the number of required parking spaces and by comparing this required supply to the estimated parking demand, we evaluate the impacts and possible steering effects of parking standards. We base our estimations on a hypothetical scenario, in which all existing residential buildings comply with the requirements and use the number of registered cars as a proxy for residential parking demand. Our results reveal great differences between the cities’ parking standards. Some cities have minimum requirements, which would lead to a parking supply exceeding the current parking demand in large, mainly densely-populated and centrally located areas. These requirements would result in an oversupply of off-street parking at the place of residence of more than 50% of all residents, which in some areas would even exceed the parking demand by a factor of 2. In contrast to that, other cities have quite stringent requirements, which fall well below the current parking demand at the place of residence of 64 to 81% of all residents. Some of these restrictive cities complement their minimum parking requirements with additional measures by enforcing maximum requirements, limiting access to parking permits or reducing the overall parking capacity. Based on these findings, we discuss the adequacy of the parking requirements, their likely underlying objectives and their possible impacts on future urban development.

Keywords

• Parking requirements
• Parking standards
• Parking norms
• Off-street parking
• Parking demand
• Car ownership