Accreditation is gaining ground in human services as leaders find ways to demonstrate the quality and legitimacy of services. This study examined site-level accreditation for SafeCare®, an evidence-based practice designed to prevent and reduce child maltreatment. We leveraged two waves of qualitative data to explore the perspectives of trainers, organizational and system leaders, and program developers who participated in an initial rollout of a site-level accreditation process for SafeCare. Institutional theory was used to frame accreditation's potential benefits, burden, and impact. Findings highlight specific considerations for the human service environment, including the inherent resource scarcity, interdependence among organizations, and the impact of cost and slow-moving bureaucratic processes. Current institutional pressures – such as large funding streams coming out of federal initiatives that rely on program developers to report which sites are accredited when financing evidence-based programs – may force human service organization (HSO) leaders to consider participation in site-level accreditation specific to a particular evidence-based practice (EBP) or model. Although accreditation may not meaningfully change day-to-day service delivery of an EBP, HSO leaders may gain other benefits, including cross-site communication and the ability to demonstrate legitimacy and competence within their organizational field. Accreditation cost is an essential and unavoidable consideration for program developers and purveyors who plan to use accreditation to support EBP sustainment and scale-up in HSOs. [ABSTRACT FROM AUTHOR]