The increasing affordability of electric vehicles (EVs) makes their widespread adoption inevitable. While extensive research exists on EV adoption and grid impacts, the influence of regulatory-based charging infrastructure development remains underexplored. This study investigates whether Germany's Building Electromobility Infrastructure Act (GEIG) can adequately support national EV adoption targets through a case study of Aachen's inner-city districts. Using scenario-based modelling, three deployment pathways (conservative, moderate, ambitious) are analysed, integrating building renovation projections with GEIG requirements to model charging point (CP) deployment across residential, commercial, and off-street parking facilities until 2045. Results reveal significant disparities across scenarios. The conservative rollout achieves an electric vehicle-to-charging point (EV:CP) ratio of 15.5:1, barely meeting Germany's 15:1 target. The moderate rollout reaches an 11:1 ratio, while only the ambitious rollout achieves an optimal 6.4:1 ratio staying close to the current ratio of 6.8:1. Power flow analysis of a chosen district (Steffensviertel) shows the ambitious scenario increases peak grid load by 22% and transformer loading by 13.5%, remaining within operational limits. The study concludes that current regulatory frameworks alone are barely sufficient to meet Germany's national targets. Achieving 100 % EV penetration by 2045 requires deployment strategies beyond regulatory compliance, providing critical insights for urban planners