This paper considers a metropolitan area where residents can commute between several jurisdictions. These residents show NIMBY behavior (Not-In-My-Backyard). They try to preserve their living quality by pushing their polluting economic activity to the neighboring jurisdictions, while keeping their labor income as commuters. This induces a race-to-the-top among jurisdictions. Fiercer competition due to a higher number of jurisdictions intensifies this race-to-the-top; commuting costs, pollution taxes, payroll taxes and bigger jurisdictions increase rather than decrease the incentive for more pollution.