Mohammed, Abdurezak (PhD)Sebsebie, Bezawit2020-12-212023-11-042020-12-212023-11-042020-06http://etd.aau.edu.et/handle/123456789/24212The objective of this study is to identify the causes of construction project delay on the five ongoing projects of TL foundation specialists that are only located in Addis Ababa. In order to do that dif erent delay causing events have been listed under the five main category groups, to identify which event is more important cause of delay than the other is, RII value have been used . To collect the needed data questionnaire and interview were used, using a census method questionnaire was distributed to all the skilled contractors, clients and consultants that are related to the projects of TL foundation specialist. The Result show that the top ten main causes of delay in the case of TL foundation specialist ongoing projects are : (1)Lack of local construction materials in market;(2) Low quality construction materials;(3) Availability of local materials and sourcing;(4)Machineries distribution problem;(5)Late start & resource mobilization to site;(6) Dif iculty in project financing ( Low financial system);(7) Suspension of works;(8) Lack of availability of imported construction materials and goods on market;(9) Delay in progress payments for completed work;(10) Financing dif iculty .Recommendations depending on the results of the study was also given .Out of this the main suggestions given is, since most of the time delay is caused because of lack of equipment’s, Low quality of machines and not being available in the local market contractors should be able to handle and be ready with martials that have better quality and also should import all the needed machinery to execute the project. Clients should pay depending on the contractual agreements.en-USDelay, Delay Causesfoundation specialistcontractual agreements.Thesis