The Sullivan Corporation began exclusively in the tenant finish area, completing high-quality projects both on time and on budget for a variety of national retailers across the country. Although we have grown, we still welcome interior & tenant improvement projects. The Sullivan Corporation's past work includes renovating the historic Indiana Oxygen Building to a fine-dining steakhouse, countless retail tenant renovations, and many medical office renovations. There is no concept or design that is outside of our ability. The Sullivan Corporation has the experience needed to breathe new life into an existing space.