The latest building to be completed by Brandywine Realty Trust at 935 First Avenue in King of Prussia is four stories, 104,000 square feet and is centered around a 90-foot atrium capped with a pyramidal skylight. This building is seeking LEED (Leadership in Energy & Environmental Design) certification by the US Green Building Council. As such, this is the first suburban office building in the greater Philadelphia area to receive this distinction.

As a "green" building, 935 First Avenue is set apart by the innovative usage of recycled/recyclable material, energy-conscious management and attentiveness to air quality.

The site was recycled. There was an existing 118,000 square foot building on the site which was demolished. All of the concrete from the demolition work was crushed and the resulting stone was used under the parking lots and building pad. Most of the other demolition debris was carted off to various recycling centers and very little actually ended up in a land fill.

The steel structure of the building is made from 90% recycled steel.

The glass on the building is only slightly tinted to allow for more natural light. The glass on the southern and western exposures of the building filter out a high degree of infra-red light (which causes the building to warm up) thereby reducing the amount of air conditioning required.

The AC units will monitor the carbon dioxide levels in the building. What this means is that outside air will only be introduced when required, thus it reduces the amount of air and energy needed for cooling or heating. Most A/C units filter about 35% of the dirt particles. However, their system will filter out about 65%, accompanied by a charcoal filter to remove most of the air pollens.

The finishes were selected based on their qualities for being either recycled, recyclable or renewable. An example of recycled would be the wall coverings. The bathroom wallpaper is made from recycled plastic, as are the fabric wall panels that are in the lobby. The carpets, although containing a small percentage of recycled material, can be ripped up at the end of their useful life, shredded, and made into new carpet (recyclable). The cherry wood throughout the building come from certified wood stocks (renewable).