The purpose of this study is to find what factors are directly related to the location of a NIMBY (Not in my backyard) facilities. Using causal loops and stock-flow models derived from System Dynamics (SD) approaches, it focuses on Cheongju crematory location project in Korea. After a series of simulation works, the research finds that the unilateral tactics handled by the public unit have aggravated the public project delay as the negative externalities originated from the adjacent location of NIMBY facilities have exerted significant influence on the dynamic perceptions of major stake-holders. We observe that the proposed alternative negotiation-based models produce higher level of planning performance than the existing approaches in relatively a shorter period. Even though the former may require more human and material resources from the very beginning stage, as they have to deal with diverse grievances raised by neighboring residents, most of them would be geared toward strengthening reinforcing loops within the complex conflict structure. These results imply that the proposed negotiation approach to deal with public location projects would enhance mutual agreement among major stake-holders, upgrading the overall quality of public project management.