This paper examines some questions of approaches to corporate project management. The relationship between maturity level of project management and standartization of project activities is contemplated; the role of project office at all levels of evolutionary maturity is defined; the organizational framework of implementation of project management corporate system (PMCS) and project management standard is analyzed; the place of PMCS in organization management structure is defined. A conceptual model of corporate project management standard�s development and implementation is proposed. Within this model the boundary conditions for created system and, respectively, for the standard are defined: functional framework of the standard and project management system are defined; key roles in organization project management processes are established; key processes and functions on organization project management are formulated. Besides, the project phases on development and deployment of project management corporate methodology are offered in this paper.