The goal of this research is to identify the linkages between spatial environmental elements and crime prevention factors, discuss the direction of CPTED, and explore ways to encourage private sector participation to strengthen crime prevention in private buildings. To achieve this, the study derives physical environment factors that should be included in crime prevention strategies, and proposes strategies to enhance participation and effectiveness in private building crime prevention. The study analyzed the impact of physical environment characteristics of buildings and urban spaces on crime occurrence, derived relevant variables, and collected expert opinions to evaluate the effectiveness and need for the expansion of the National Police Agency's private building CPTED certification program.