This research study is concerned with the effect of store design on materials handling a case study of Power Holding Company of Nigeria (PHCN) kaduna for better understanding of the work effort was made at the introduction stage to explain the general importance of store design with special consideration being placed on its impact in an industry especially Power Holding Company of Nigeria (PHCN) kaduna. The general problem was also emphasized on such problems as negligence of management of store activities, construction cost, poor storage design. Also discussed is objective of the study which include, to examine the effect of store design on materials handling to ascertain difficulties associated with store design on materials handling. The significant of the study to the academic, the organization, the entire populace and the researcher is also discussed research question was also derived which include to know if store design have effect on material handling and the difficulties associated with store design. The survey research designed is adopted simple sampling procedure was employed. The researcher used questionnaire, interview and documentary source techniques too retrieve data. The likert four rating scale techniques is adopted to analyse the data. Finding made among which are, that store design have a great effect on materials handling activities in the organization that the organization store design is often faced with difficulties and that engagement of professional will help to curb the difficulties faced by the store design. Also the researcher included that the design of store should be in accordance with the store operational activities of the firms, that the organization placed on importance consideration on store design and lastly amongst recommendation made are, the engagement of professional in the management of he store design activities of the organization, align the store design with the organization activities to effect the effectiveness of the activities and that the top management should give a considerable support to the design of the store activities to ensure its effectiveness.