Abstract: The purpose of this study were to examine the capacity building interventions received by CCOAIB, to study the extent to which Capacity building interventions have contributed to CCOAIB’s performance and; to evaluate the most contributing capacity building interventions to organization’s performance. The researcher used is descriptive research design. The sample size was 169 respondents from a population of 300 employees of CCOAIB within City of Kigali. In selecting the sample size the researcher used purposive sampling technique. Research instruments used included Questionnaire, interview guides, for secondary data, organizational reports, employee capacity development manuals, journal, books and articles were used.. Descriptive statistics were used where distribution through STATA.