iarjetIARJETIARJET2708-5163https://doi.org/10.47310/iarjet.2021.v02i01.010Analysis Factors of Cost Overrun and Contract Change Order Impact on Road Construction Project in Surakarta Apbd 2017 -2018MuhammadNurSahidAntoBudiListyawanGototSlametMulyonoYusufSuryaKusumaCivil Engineering Department, Faculty of Engineering Universitas Muhammadiyah SurakartaSurakarta is a city in Central Java, Indonesia, which always has ongoing or planned construction projects. In the process, a project does not always run smoothly. Additional costs that lead to cost overrun and contract change orders often occur. Therefore, this study aims to find the factors of cost overrun and factors of contract change orders that affect cost overrun. This research is the result of the development of previous research written by Mr. Bariq Al Salam with the title "Analisis Faktor–Faktor Penyebab Pembengkakan Biaya oleh Kontraktor Proyek Jalan APBD Kota Solo Tahun 2017-2018". The data from this study are the results of a questionnaire from previous research which has variables of cost overrun factor which was then developed with reference to the Presidential Regulation of the Republic of Indonesia concerning the Procurement of Goods and Services No.8 of 2018 Articles 54-55 to obtain the variables of contract change order factor. In this study, the data were analyzed SPSS version 23. Based on the analysis that has been done, there are several dominant factors that gives influence to the occurence of cost overruns, there are: not calculating the effect of inflation and exlation (8.39%), the use of imported materials (29.64%), overtime work too often (18.70%) and maintenance costs not as planned (9.07%). All the factors that are significant to the incidence of additional costs are the factor of the variable cost overrun, while in the variables of contract change orders, none of them are significant.