Callan Consulting Engineers, Inc. specializes in Mechanical, Electrical, Plumbing and Fire Protection engineering for Green Buildings, Existing Buildings, Capital Improvement, Commercial Real Estate (Office Buildings), New Construction, Commissioning, Sustainable Design, Energy Efficiency, Building Simulation, and Building Envelopes. We welcome the opportunity to collaborate with owners, managers, architects and builders on challenging projects in new or existing buildings. Solving problems and getting the best possible performance from a building is a perpetual motivator. A high performance building needs people to operate it and occupy it. That's why my desire to work with stakeholders, to understand their needs and preferences, leads to buildings that perform. People and buildings - it’s a perfect fit.