International Journal of Engineering and Information Systems (IJEAIS)   Year: 2023 | Volume: 7 | Issue: 1 | Page No.: 23-35 Analysis of the Effect of Contract Changes Order (Cco) on Cost Overrun in Road Projects Boyolali District APBD 2017-2018 Download PDF Ir. Muhammad Nur Sahid, M.M., M.T. Mochamad Solikin, S.T., M.T., Ph.D. Drs. Gotot Slamet Mulyono, MT. Abdul Rochman, M.T, Lapril Priyambodo Abstract: The development of construction projects in Indonesia is experiencing rapid growth. The increase in development creates competition between construction service providers. Good management is needed so that project problems do not arise that have the potential to cause work failures that cause cost overruns. This study aims to identify the factors causing cost overrun on road construction projects in Boyolali Regency in 2017 and 2018. The data used in this study is secondary data, namely data obtained through literature review and literature study from previous research. The secondary data obtained are used to create a new questionnaire sourced from Presidential Decree No. 16 of 2018 articles 54-58 and attachment III B.SDP PK PerMen PUPR No. 14 of 2020 article 36-40 regarding contract changes. The method in this study is to process the results of the questionnaire using the Statistical Package for the Social Sciences (SPSS) version 26 program. The dominant factors that have the most influence on cost overruns are not good at making schedules and resources (X2.1), an increase in material prices (X4 .1), and the addition of the performance factor/capability of the equipment is not optimal (X5.1) with the value of effective contribution (SE), 24.02%, 2.25%, and 6.47%. So the effect on cost overruns is not good in making schedules and resources (X2.1) with an effective contribution value (SE) of 24.02 %.