Existing Building

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

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