This study examines the impact of building use on the prevalence of illegal parking in Copenhagen. Illegal parking poses significant challenges to urban mobility, environmental sustainability, and urban aesthetics. By focusing on Copenhagen, a city renowned for its progressive urban policies and commitment to green mobility, this research investigates how different building use categories such as commercial, residential, institutional, industrial, leisure, and technical affect illegal parking incidents. Utilizing data from 2021 to 2023, the study employs spatial analysis and Ordinary Least Squares (OLS) regression to analyze the relationship between building use and illegal parking. The findings indicate that commercial buildings have the highest positive impact on illegal parking prevalence, followed by technical and institutional buildings. Conversely, residential buildings, while highly prevalent, show a less significant impact on illegal parking. The study underscores the importance of urban design and effective parking management in mitigating illegal parking. Proximity to public transportation hubs shows a complex relationship with illegal parking, highlighting the need for comprehensive strategies that address both parking demand and public transport accessibility. These findings provide valuable insights for urban planners and policymakers aiming to develop sustainable urban environments.