The New York City Department of Design and Construction

The New York City Department of Design and Construction (DDC) hired e4, inc., in conjunction with Horizon Engineering, to conduct a three month study of the feasibility of achieving a LEED for Existing Buildings: Operations & Maintenance (EB: O&M) Silver Rating for three City cultural buildings and evaluating the approach as a way to reduce energy consumption and greenhouse gas emissions across the City portfolio of buildings. In addition to these three buildings, e4 also evaluated which credits could be addressed portfolio-wide. This was the first time that the City had commissioned a comprehensive study of applying LEED EB: O&M to their existing building stock.

The Peter Jay Sharp Building at the Brooklyn Academy of Music is a 119,000 square foot cultural and entertainment facility that boasts a 2,000 seat opera house, practice spaces, a café, a four screen cinema and staff office space. Completed in 1908, BAM receives more than half a million visitors per year.

The Flushing Branch of the Queens Borough Public Library (completed 1998) is a 76,000 square foot building that houses a branch library, an adult learning center, the International Resource Center and a state-of the-art auditorium and exhibit space.

The Administration West Building at the Bronx Zoo was originally built at the turn of the century to house the bird exhibit. In the early 90’s the building underwent a comprehensive renovation which turned the building into a 27,720 square foot administration building.


TIAA-CREF 8500 Andrew Carnegie Boulevard

e4, inc. provided existing building services for the TIAA-CREF New York and Charlotte Campus Headquarters. Both locations were seeking LEED for Existing Buildings Operation & Maintenance (EB: O&M) Ratings and LEED for Commercial Interior Ratings for ongoing renovations.  e4 worked with TIAA-CREF to develop, implement and document building operation procedures that reduced energy consumption and improved the sustainability of ongoing operations. TIAA-CREF expanded e4’s initial scope to include achieving LEED EB ratings for every building on the Charlotte campus except its data center.                       

8500 Andrew Carnegie Boulevard is the centerpiece of TIAA-CREF’s Southern Service Center located in Charlotte,North Carolina.  Comprised of five office buildings and one data center, the campus setting presented unique challenges to LEED EB: O&M certification.  e4, inc. worked with ownership to develop required operational policies and plans and implement them on a campus wide basis while also focusing on improved operations within the headquarters building.  As a result of these efforts, the building achieved LEED Gold certification.