When a dynamic couple, both in creative fields, approached Toni Lewis and Marc Schoeplein of Lewis|Schoeplein Architects to add an ADU to their Southern California home, they looked to what was already in front of them to imagine what could be. After they’d briefly considered tearing down a small rear building that was originally a detached garage, they realized that a creative reconfiguration allowed them to maximize lot coverage while keeping the overall construction scope—and cost—in check.