Concrete, because of its versatility in use, is a major component of most of our infrastructuralrnfacilities today. The quality of concrete is affected by its constituent materials, the equipmentrnused and the workmanship in concrete production process. A better or poor concrete may bernmade of exactly the same ingredients based on the quality control practice of the productionrnprocess.rnThe city administration of Addis Ababa is building and administering condominium buildingsrnaround the city for more than one million house seekers around different project location ofrnAddis Ababa. Most parts of these projects are reinforced concrete structure in which concreterntakes the major proportion among the consumed construction materials.rnThis research is carried out on the quality of concrete produced and the quality managementrnpractice to enhance concrete quality under projects administered by Addis Ababa housing projectrnoffice, by taking the Koye Feche site as a case study. The research used literature review, deskrnstudy, interview with experts and analysis of compressive strength test results on samplesrncollected from ongoing concrete production sites.rnStatistical quality control based on compressive strength tests conducted on selected projectsrnreveals that, 40.4% of the test results were found to be defective based on EBCS-2:1995rncompliance criteriaâ€™s. According to ACI-214 classification, 35.4% of test result based onrnstandard deviation indicates poor quality control whereas 71.25% of the test results show poorrnquality control practice based on their coefficient of variations.rnThe investigation shows that, the use of poor gradation aggregate and high silt, clay, and dustrncontent of sand, water with impurities, problems with batching which usually called underrnbatching and over batching are major causes of quality problems. Furthermore, lack of attentiverncontrol on each production process, lack of management commitment and poor workmanship inrnquality concrete production is also the most frequent problems identified by respondents.rnKey Words: AAHDPO, Coefficient of Variation, CQMP, Management Commitment, QualityrnControl, Standard Deviation, Statistical Quality Control, TQM and Workmanship.