This session explores the latest ASHRAE standards, guides, and emerging tools for designing buildings with minimal carbon footprints, including Standards 240P, 105, and 228, the Advanced Energy Design Guides, and grid-interactive building strategies. It also examines the evolving regulatory and legal landscape, highlighting how rapidly changing green building practices can create professional liability risks for engineers and architects. Attendees will learn practical strategies to balance environmental responsibility with legal protection while advancing sustainable design.