To comply with NYC Local Law 97, buildings will need guidance on how to implement capital measures that effectively reduce carbon emissions. However, even detailed energy studies can have unrealistic recommendations if engineering design considerations are neglected. Meanwhile, design engineers tend to focus more on system sufficiency instead of efficiency. Practitioners are tasked with narrowing this knowledge gap and identifying crucial details that could make or break a building’s ability to implement recommendations. Our talk will address some of the necessary feasibility checks for commonly recommended measures. We will also present real project examples and lessons learned from the perspective of our panel’s design engineer, energy auditor, and property manager.