Much of the character and soul of Warren Hall can be derived from the historic quality finishes that existed in the building before the renovation. Architects strove to restore and enhance the building functionality while respecting the existing building character. One opportunity seized on included the restoration of 1,600 square feet of salvaged stone flooring.

The building uses extensive daylight penetration to lower energy costs used to light the space and to create a connection between occupants and the outdoors. In addition to lowering lighting and cooling costs, increasing daylight to occupant workspaces has been shown to have health benefits for occupants and increase productivity.

Instead of simply installing new forced air ventilation systems that would require energy to operate, the building designers included operable windows and trickle vents in the office spaces to allow occupants to control their own ventilation preferences, access fresh air, and save energy.

Many historic features such as windows and fireplaces were protected and maintained to preserve the character of the building, while others were recreated such as the ceiling coffering and woodwork inlay patterns. Material selections were carefully made to enhance the environmentally friendly attributes such as recycled content or regional manufacture.