The study aimed to assess the current project implementation practice ofrnBamacon Engineering P.L.C and identify factors which affect the constructionrnperformance in accordance with their severity. The study used both qualitativernand quantitative research approaches. The qualitative approach was used forrndocuments review and open ended questions that were included in the questionerrnand the quantitative approach for closed ended questions. Accordingly, data wererncollected through questionnaire from sample respondents. The target populationsrnfor this study were skilled laborers of five projects namely: DH1, Century 1,rnCentury 2, Nomiyan Apartment and Metrpolitan Apartment located in AddisrnAbaba. The total population was 78. Sampling technique that the researcher usedrnwas Census Method. Out of 78 respondents, 52 workable data were obtained.rnThose data were, then, analyzed through descriptive and explanatory statistics. Inrnthe descriptive analysis, the data were presented in Histogram and Pi-chart formrnand from there described the situation of project implementation practice.rnExplanatory analysis using regression (Multiple Linear) was employed to analyzernthe severity of the factors affecting project success. The finding revealed that thernfive project success factors (Project, Client, Contractor, Consultant and supplyrnchain) altogether account about 61% of the variance in project success; Projectrnrelated factor, Consultant related factor and Contractor related factor havernstatistically significant contribution to the success of projects. It was also notedrnthat projects run under the risk of cost overrun and time delay but keep thernquality as required in the specifications. From the documents review, it was notedrnthat there is a minimum of 26 days delay and work productivity of unskilled laborrnis less than required.