As building performance standards evolve, owners and operators are under increasing pressure to demonstrate measurable energy efficiency improvements. In Oregon, the new Energy Performance Standard establishes a framework for benchmarking and reducing consumption across existing buildings, aligning closely with the performance verification and continuous improvement intent of LEED v5 for Operations and Maintenance. This presentation explores how retro-commissioning (Retro-Cx) serves as a strategic bridge between these requirements – providing the data-driven insights and operational tuning needed to both comply with state regulations and achieve higher LEED performance scores.