This chapter explores how grassroots urbanism in Haiti emerges as both a response to institutional disconnection and a driver of resilience in contexts of chronic state absence. While formal planning frameworks often remain abstract, technocratic, and detached from local realities, communities mobilize situated practices to address urgent needs in housing, sanitation, water, and security. These practices generate forms of co-production, where survival strategies gradually evolve into collective models of urban governance. Local leaders, religious organizations, and hybrid institutions play pivotal roles in mediating access to resources, regulating social life, and articulating claims of recognition. Yet, this bottom-up resilience is fraught with contradictions: it provides vital solutions but also reproduces inequalities, precariousness, and fragmented sovereignties. Through the lens of grassroots initiatives, the chapter reveals how urban governance is simultaneously improvised and negotiated, anchored in the lived experiences of marginalized populations rather than in formal policies. It argues that community resilience in Haiti should not be romanticized as an alternative to state authority but critically analyzed as a form of situated urbanism that exposes both the creativity and the vulnerabilities of citizens forced to govern in the absence of effective institutions.