Radical common sense” is the term a fellow preservation architect uses to describe a mindset that values repair over replacement. Why is this radical? Because, while reuse of water bottles and grocery bags is rapidly gaining ground, reuse of buildings and building components is not. And it’s not hard to see why: It is almost always less expensive and easier to replace a whole building and almost any of its elements—doors, windows, light fixtures—than to repair and reuse. Replacement also can offer measurable and consistent quality with product certifications and warranties not available for repaired items. Theoretically, a new building can ensure “high performance” and significantly reduce the environmental impact of building operations while