Critical Path Method (CPM) is a methodology for planning, executing and managing projects. Present thesis research is oriented and focuses to analyze construction project management technique and methodology for under construction buildings taken as a live practical case for research as a problem location. The research is identified to show offers and effect of CPM technique to improve project performance and help decision for manager for improvement in existing method of construction and its planning. It is required to plan and design CPM, In thesis research work I work on Green city ext. Situated at the Prime Location of Bawadiya Kalan, A project with ample amount of natural source of light, cross ventilation of Air flow, Best In class Aesthetic planning & designing of the orientation of the building, having spacious sizes of the rooms in the flat thus it is truly a benchmarked covered residential campus.