The construction industry generally deals with the various types of construction sectors viz Real Estate & Infrastructure. Real Estate Sector is segmented in Residential, Industrial, Corporate, and Commercial. Whereas Infrastructure sector in Roads, Railways, Urban Infrastructures, Ports, Airports and Power. To manage such kind of unique projects requires an expertise with organizations and a thorough body of knowledge. The purpose of this paper is to provide the analysis or breakdown of Role of Project Management Consultancy and study the Problems faced by PMC for implementing the project. Project Management Consultancy plays multifaceted part in such projects and provides the services from inception to completion of projects. At every stage of project life cycle, the principles of pro-activeness and creating the win-win situation is necessary keeping in mind the customer / client's requirements. Use of Project Management Consultancy (PMC) offers one of the effective management solution to increase and improve the efficiency and outcome of a project in construction. A case study of construction of a Mega Industrial Project which is dealt by PMC and Project consist of various type of buildings for Manufacturing unit, Assembling unit , Logistic unit , Process unit with allied Infra of Electrical utilities, Services like Fire fighting, Sewage line, Storm water arrangement and Road etc have been considered for this research work.