This study explores the integration of sustainability principles into project management within U.S. organizations, focusing on how these practices enhance organizational value, reduce operational risks, and improve project outcomes. The research aimed to examine the role of sustainability in project management, assess the influence of the environmental, social, and economic pillars of sustainability on project outcomes, and validate the hypotheses that sustainable project management enhances organizational value (H1), creates competitive advantages (H2) and improves project performance (H3). Using a case study approach combined with a comprehensive literature review, the study analyzed practices and challenges in U.S. organizations to understand the impact of sustainability integration. The findings reveal that organizations embracing sustainable project management practices gain a competitive edge, achieve greater resilience, and deliver better project outcomes than those that do not. Sustainability principles were found to enhance organizational value, mitigate risks, foster stakeholder satisfaction, and improve project performance when the three pillars, environmental, social, and economic, are holistically balanced. The study concludes that embedding sustainability in project management is essential for long-term success, offering benefits such as improved access to capital, enhanced employee morale, better customer loyalty, and more efficient supply chains. Recommendations include implementing sustainability action plans, improving internal systems, embedding sustainability into strategic decision-making, and leveraging technological advancements to align with global trends. These measures ensure sustainable project outcomes, strengthen competitiveness, and maintain environmental, social, and economic equilibrium.