The sustainable transition is being taken seriously by industries worldwide, but progress remains slower than anticipated. The primary challenge lies in the limited scope for holistic improvements due to economic hurdles and isolated decision-making within companies. Creating synergies between different industrial and municipal entities offers a promising solution. However, this complex process is often managed by municipal authorities without adequate tool support. To address this, we propose a methodological approach that simplifies the collection and processing of relevant data. Beyond gaining corporate buy-in, obtaining and analyzing company-specific data is crucial. A software-based tool has been developed to systematically identify, quantify, and visualize synergy potentials across different stakeholders. These insights enable the development of tailored, location-specific scenarios, providing a concrete roadmap for cross-organizational sustainable transformation. The necessary collaborative decision-making process—in which all relevant stakeholders should be involved—is facilitated through an interactive visualization tool. The additional benefits of the application will be outlined based on two illustrative examples.