Abstract Background Challenges in healthcare, such as rising healthcare costs, shortages of healthcare staff, and health disparities, have made many countries focus on intersectoral collaboration (IC) and citizen participation (CP) in community-based prevention (CBP) and health promotion (HP). Previous research on IC and CP has addressed the importance of exchanging perspectives to arrive at a shared vision and ambition. Our study is part of a long-term action research project conducted in two neighborhoods in the Netherlands. It aims to provide insight into stakeholders’ perspectives on IC and CP in CBP and HP to facilitate building partnerships. Methods Data collection takes place from March to June 2024. As part of a Q-study, we perform post-sort interviews. The Q-methodology is based on sorting statements concerning various aspects of IC and CP in CBP and HP (e.g., roles and tasks, involvement of citizens, communication, perceived barriers, etc.). We aim to include 40-50 participants from the aforementioned neighborhoods with diverse backgrounds. Participants sort 40 statements (Q-set) into a fixed-scaled framework ranging from -4 (disagree) to + 4 (agree). The interview is about individual sorting and perspectives on their own role within the collaboration. Results So far, the results of 10 participants with backgrounds in health care, social work, sports, local authority, volunteer work, and public health have been analyzed.Preliminary data synthesis shows six themes concerning shared purpose, collaboration partners, social collaboration competencies, personal motivation, conditions, and collaboration organization. Conclusions The preliminary themes overlap with findings from previous research. We will adapt existing models to reflect on our findings and enrich the literature with new themes or insights in the specific context. The interviews will help interpret the Q-sorts and develop follow-up actions in the action research projects in the participating neighborhoods. Key messages • Insights in stakeholders’ perspectives are valuable for building local collaborative partnerships. • Shared purpose, collaboration partners, social collaboration competencies, personal motivation, conditions, and collaboration organization are themes of interest to intersectoral collaboration.