Okay, let’s tackle this. So Irvin has skills in interior design, architecture, and green building, which are in demand. He has 6+ years of experience as a Constructor Engineer, which is a solid foundation. Location is Miami, Florida, which is a competitive market. According to the Bureau of Labor Statistics, interior designers in the South region (which includes Florida) have a median annual salary of around $55,000. However, considering Irvin’s expertise and experience, I would estimate his hourly rate to be around $125, which is slightly above the national average for interior designers in this region.