Today, there is a growing demand for housing complexes due to rapid urbanization in major metropolitan areas. While architects must meet new sustainability standards, they are also expected to demonstrate creative solutions for humanizing mass housing for the well-being of residents. This paper proposes an intuitive platform for users to visually study possible housing complex designs and their potential performance in energy use intensity (EUI), environmental, and some financial criteria based on preliminary sketches drawn by users. Before users start sketching, our program auto-generates basic layouts with performance results. With this knowledge, users will be able to visually grasp intrinsic relationships between built forms and performance characteristics and reflect on their new design. Our goal is to provide a platform that enables designers to effectively incorporate qualitative contributions from early exploratory stages into advanced design stages, allowing architects to focus on more creative solutions.