The primary purpose of this research was to study the impact of major risk factors which arernidentified particularly in high rise building construction sites. 32 high rise buildings werernevaluated using the questionnaire prepared and experts from 4 selected high rise building rnconstruction sites participated in the interview. The study revealed the major risk factorsrnaffecting the performance of the high rise building construction industry which is thriving inrnAddis Ababa, which are Inflation and Exchange rate fluctuation, Incorrect plan of work, cost,rnschedule and quality, poor use of advanced software, Importation, customs and visa issues, rnPermit requirements. Based on the DEMATEL assessment undertaken 16 of the risk factors rnwere found to be cause factors while the remaining were effect groups.