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As the apartment complex became one of representative residential facility, changes occur in all phase of a construction phase caused by unexpected situation, uncertain factors and change of project plan. It is essential to implement an appropriate change management regime to reduce change-associated cost and time delay. Studies and research on changes has been focused on very general buildings or specialized buildings. As a result, there are limitations to apply as change factors for apartment complex projects with prior studies. here fore, in this study, it was classified tenement house space to function space configuration to derive the importance of change order factors for each apartment space. This study categorize the functional space in order to analysis the importance factor for private apartment houses change orders. With literature review and case study of private apartment change orders, the change order factors has been used for interview with experts who was involved in private apartment houses. After interviewing with experts, factors for change orders has been selected. The importance level has been fixed by interviewing every participants of private apartment houses with method of AHP(Analytic Hierarch Process). This study indicates the effective change management for private apartment houses with final result of factors and importance on change orders.