Okay, let’s calculate this. Lu Ellen has 18 years of experience, which is a strong foundation. Her role as Associate Principal - Architect at NTD Architects suggests a high level of expertise. Her education from California State Polytechnic University-Pomona is also a plus. Skills like BIM, Revit, and sustainable design are in demand. Location is Upland, California, which is a relatively affordable area. Considering her experience, education, and skills, I estimate her hourly rate to be around $125. This is slightly below the national average for architects in the US, but it's reasonable given her location and the fact that she's not a principal at a large firm.