Okay, let’s tackle this. So Pamela Keehn has skills like interior design, sustainable design, and space planning, which are in demand. She’s based in Madison, WI, which is a mid-sized city. According to national averages, interior designers with similar skills and experience can charge around $50–$100 per hour. Considering her expertise in sustainable design, she might be able to charge a bit more. Let’s estimate around $75 per hour, which is at the higher end of the average range.