“Open House” aims to prompt a reconsideration of the cultural norms and values currently expressed in Knoxville’s market square. The design leverages a new material and programmatic lexicon that prioritizes flexibility over rigidity, complexity over simplicity, and movement over stability. In 1854, Market Square was established, and a small market house was constructed on the site - a one-story brick structure with arched openings. The business owners were a diverse group, including immigrants from Germany, Switzerland, Greece, and the Jewish community. Many vendors resided in the adjacent working-class neighborhood of Old North. This design explores the vernacular of the historic market house, or its ghost state, to explore themes of decay, renewal, and flux with the ultimate goal of reimplementing a shared commons that could also provide rich spatial heterogeneity. Utilizing the footprint of the old market house foundation as a guide, the structure is explored in varying levels of emergence and erasure to nod to Knoxville’s history as well as its current state of rapid growth, being in a place of transition.