In today's climate crisis, it's imperative to change the way we design and build in order to reduce or eliminate carbon emissions. However, some of these changes to building design can introduce unanticipated side effects. We can minimize these side effects on future projects by learning from each other - we all have insights that we've gleaned from our own projects. This presentation is a collection of lessons learned on the path to better performing buildings. Let’s share! Topics include wood vs. steel studs, incorporation of thermal breaks, reduction of Portland cement and concrete volume, and air barrier pitfalls.