Okay, let’s tackle this. So Robert Symons has 44 years of experience as an architect, which is a significant amount of time. He has a strong skillset in architectural design, sustainable design, and residential design. He is also the owner of his own firm, which suggests a level of autonomy and expertise. Location is Rohnert Park, California, which is in the San Francisco Bay Area, a hub for tech and design industries. Architects with his level of experience and expertise can charge higher rates. Maybe around $200–$300 per hour? But considering his extensive experience and ownership of his firm, maybe higher. Some top architects can charge $400–$600 per hour. Let’s check averages. Architects with his background might average $250–$400. So I’ll estimate around $275