Sara Gutterman talks with Matthew Cooper, Senior Vice President and Chief Operating Officer at PEG, about how energy modeling, performance validation, and embodied carbon measurement are changing the way homes are designed, built, financed, and valued. Together, they explore why first cost and price per square foot no longer tell the full story—and how tools like RESNET 1550 can help builders, manufacturers, municipalities, and homeowners better understand the true long-term value of healthier, higher-performing, lower-carbon homes.