This toolkit serves as a practical roadmap for researchers to engage effectively with local governments and influence community-level decision-making. It highlights that while municipalities manage critical infrastructure and services—such as transit, housing, and climate adaptation—they often lack the formal scientific advisory mechanisms available at higher levels of government. The document provides actionable strategies for translating complex expertise into policy-friendly formats, including guidance on attending council meetings, submitting briefs, and building relationships with local officials. By focusing on clear communication and strategic engagement, it aims to bridge the gap between technical research and local policy to ensure community decisions are backed by evidence.