Access to appropriate health and social care is challenging for vulnerable populations. We used a 'pop-up' delivery model to bring community-based services in contact with communities with poor access to health and social care. Our aim was to examine whether pop-up events improve access to essential health and social support services for selected vulnerable communities and increase collaboration between community-based health and social services. Set in south-eastern Melbourne, two pop-up events were held, one with people at risk of homelessness attending a community lunch and the other with South Sudanese women helping at-risk youth. Providers represented 20 dental, housing, justice, employment and mental health services. We made structured observations of each event and held semi-structured interviews with consumers and providers. Pre-post surveys of managers assessed acceptability and perceived impact. We reached 100 community participants who had multiple needs, particularly for dentistry. Following the events, participants reported increased knowledge of services and access pathways, community members spoke of increased trust and partnerships between service providers were fostered. The pop-up model can increase provider collaboration and provide new options for vulnerable populations to access needed services. 'Bringing the service to the person' is a compelling alternative to asking consumers to negotiate complex access pathways.