Okay, let’s tackle this. So Timothy Piatt has 44 years of experience as an interior designer, which is extremely long-term. His education from the University of North Texas is also a strong factor. Skills like interior design, space planning, and graphic design are in demand, especially in residential areas. Location is Dallas, Texas, which is a major city. Considering his experience, education, and location, I would estimate his hourly rate to be around $125. This is lower than what a senior interior designer with similar experience might charge, but it's still a good rate for a seasoned professional in this field.