Building Diagnostics & Property Science (BD&PS) was founded in 2005 with the goal of providing professional engineering consulting services to not only solve existing problems in buildings but also improve the performance of new buildings via building commissioning, building envelope consulting/testing, and evaluating energy management systems. BD&PS provides Total Building Commissioning, LEED Fundamental and Enhanced Commissioning; Building Envelope Commissioning and Envelope Testing services including Air Tightness Testing using a Blower Door System and Window Testing.