Dive summary:

• A glassed facade, lots of windows and open workspaces are among the changes that architects Perkins+Will made when turning a building at 1315 Peachtree St. into the firm's Atlanta offices.
• The project qualified for LEED platinum, but most of the changes were internal, and 91% of the original structure remained intact.
• The building has a natural-gas-fired power generation system on the roof to satisfy almost half of the building's power needs, and heat from that system is used in the heating and cooling system.

From the article:

The overhaul went beyond a simple face-lift: the team at Perkins+Will decided to make its building a test case for the sustainable-design practices it touts to its clientele, in addition to providing additional workspace for its growing staff and fostering collaboration. ...