The State Capitol Annex Building has officially achieved LEED Gold Certification, marking a major sustainability milestone for one of Colorado’s most historic government facilities! Originally constructed in the 1930s, the Capitol Annex recently underwent a comprehensive interior renovation that balanced historic preservation with modern performance. The project focused on improving energy efficiency, upgrading aging building systems, and creating a healthier, more efficient workplace environment, all while maintaining the integrity of this prominent civic building. Achieving LEED Gold required close coordination among the project team and a strong commitment to sustainable construction practices. Extensive documentation, collaboration, and attention to detail throughout design and construction helped ensure sustainability goals were successfully met. This certification reinforces the State of Colorado’s commitment to environmental stewardship and responsible investment in its existing facilities. The LEED Gold designation demonstrates that historic buildings can be thoughtfully modernized to support long‑term performance, occupant well‑being, and sustainability.