In residential architecture, the façade is often treated as a visual statement. It defines how a building is recognized from the street. It contributes to identity, branding, and first impressions. But the façade is not only what a building looks like. It is a control system. Before finishes, before interiors, before daily use, the façade determines how light enters, how heat is managed, how air moves, and how the internal environment performs over time. It operates continuou