"The" Residential Design Group In 2012, Randy Hatchard, J.R. Ruthig and Jeff Ziegelbaur formed TR Design Group after two decades of partnering in a nationally recognized residential design firm. Inspired by their award winning experience, they bring passion and lasting client relationships to both their local and national projects. Each Principal brings a unique talent to the group in addition to a continued personal commitment to exceptional quality and service. “The” Residential Design Group is comprised of not only the three founding Principals but also of highly experienced design and construction professionals. The team focuses on providing unique and inspirational designs combined with collaborative plans to meet the goals and aspirations of its clients. Your dream, our passion, one home at a time.