Construction industry is a major player in economy of any country by generating employment, andrnwealth to the nations. The Industry also provides infrastructure which is vital for economic growthrnand provision of service. However, many projects in developing countries experience extremely lowrnperformance and face challenge in meeting quality requirements. One of the contributing factors tornlower quality among others is poor quality control and quality assurance system.rnThe objectives of this independent project are to identify the causes of poor quality in plastering, floorrnand wall finishing works in building projects and to assess the actual practice of quality control andrnquality assurance in these works; finally to provide mechanism to prevent or to minimize poor qualityrnby applying good quality control and quality assurance system. The methodologies used for thisrnproject are literature review, interview and investigating different cases by site visiting and desk study.rnUnclear preparation of specifications for materials, poor workmanship and also poor supervision arernobserved to be highest causes of poor quality of building construction. The irresponsibility ofrnresidence engineers and site supervisors lead the project not to be completed as per the schedule,rnbudget and quality. From different research and documentation in most building construction lessrnquality work occurred due to poor quality control and quality assurance system. Some of the finishingrnworks where major quality underperformance is exhibited is in floor and wall finishing works. In thernimplementation of any projects either public or private, clients need their project to fulfill at least thernthree common elements, i.e. cost, time and quality requirements. Any deviations from the expectedrnquality result dispute between the contractor and client and also additional cost will be incurred. Byrnidentifying public building projects in Addis Ababa and investigating the causes of poor quality inrnplastering, flooring, wall finishing and malpractice; through good quality control and qualityrnassurance system; the way how to prevent or minimize defects, less standard products and alsornmechanizing to avoid malpractice will be presented in this independent project .