This study explored the impact of landlord association on peace and security in Ibadan Metropolis, Nigeria. Guided by six objectives and research questions, it examined the associations’ initiatives, evaluated their effectiveness, identified the challenges they face, analyzed how residents and security agencies perceive their roles, and suggested ways to enhance their impact. The study drew on Social Capital Theory and Collective Action Theory, which emphasize how trust, cooperation, and collective effort promote social order and community stability.A total of 200 respondents took part in the study; 130 landlords who were active members of associations and 70 tenants residing in the selected communities. Data were gathered using a validated questionnaire titled Landlords’ Associations, Peace and Security Questionnaire (LAPSQ), which achieved a reliability coefficient of 0.82 (Cronbach’s alpha). The data were analyzed using both descriptive and inferential statistics, and ethical standards were carefully observed to ensure credibility and participant protection.The findings showed that landlords’ associations play a vital role in promoting peace and security through activities such as conflict resolution, neighborhood watch programs, and collaboration with law enforcement. Despite these contributions,their effectiveness is limited by poor funding, weak member participation, and insufficient government support. Both residents and security agencies acknowledged their importance but called for more transparency, inclusiveness, and stronger institutional partnerships.The study confirmed the relevance of Social Capital Theory, showing that community trust and strong social networks enhance the ability of landlords’ associations to maintain peace. Likewise, Collective Action Theory was supported, as coordinated efforts among landlords help reduce insecurity and strengthen communal safety. The study concluded that landlords’ associations should be better supported, trained, and formally recognized to sustain peace and stability. These findings offer useful insights for improving community-based security systems across Nigeria and similar urban areas in sub-Saharan Africa.

Keywords: Landlords’ associations, peace, security, community collaboration, Ibadan Metropolis.