As architects aim to create buildings that are carbon neutral, energy efficient, and even net-positive energy, they are analyzing the performance quality of their designs as early and as often as possible. This method is called performance-based design, and it requires assessing building performance throughout the design process, rather than just at the end of a project for compliance purposes.
Mitchel Stangl started Stangl Associates in 1995 and made 3D modeling a cornerstone of their practice. He knew he had come across the right tool when he found SketchUp in 2001. "For the first time," he says, "I could model electronically as fast as I could sketch by hand."