Gary Zeller

Building Engineer

Area of Expertise

Commercial building operations, maintenance and optimization


“What do I like about my job? It’s all about the people.”


As building engineer for three of Melvin Mark’s properties, Gary maintains the building heating, cooling, electrical and plumbing systems as well as monitors energy use. He responds to tenant maintenance requests and ensures their daily office comfort needs are being met. He joined Melvin Mark in 1990 and loves to solve tough problems for tenants. He has an associate of applied science degree in industrial control, a Limited Building Maintenance Electrician License, a Refrigerant Handler Unlimited Certification, and was named 2006 Building Engineer of the Year by BOMA Portland.