Primary Clinics serve as the first line of healthcare delivery, providing basic, promotive, and preventive services to the community. Meeting accreditation standards remains a persistent challenge for these facilities, particularly in the area of human resource quality. This study aimed to analyze the quality of human resources, identify supporting and inhibiting factors, and formulate a capacity-building-based human resource development strategy at Klinik Pratama Serambi Mojokerto, a relatively new primary clinic in Mojokerto Regency, East Java. A qualitative case study was conducted from August to October 2025, using in-depth interviews, direct observation, and document review. Thematic analysis was applied to identify patterns related to human resource quality, barriers, and development strategies. The findings indicate that the clinic has implemented a structured and competency-based human resource management system, covering workload-based planning, selective recruitment, targeted orientation, and continuous training. Strengths include complete staff qualifications, well-organized administration, and strong management commitment. Remaining gaps involve limited support staff, incomplete performance assessments, and undocumented internal audits. These findings suggest that integrating human resource planning, competency development, and systematic evaluation into a unified capacity-building framework can meaningfully support accreditation readiness, even in resource-limited settings. The results offer practical guidance for primary clinic managers and inform policy on accreditation support mechanisms for newly established facilities.