Developer LCOR announced yesterday that its 17-story gut rehab of 545 Madison Avenue has earned Gold certification from USGBC under the LEED for Core and Shell rating system; according to USGBC, this is the 27th LEED Gold certification rating in New York City to date. The renovations, which were executed by Bovis and designed by New York City-based Moed de Armas & Shannon Architects, contemplated stripping the 140,000-square-foot tower down to its structural frame (which qualified it for Core and Shell consideration) and installing a floor-to-ceiling glass curtain wall and high-performance HVAC, electrical, and mechanical systems. Other green features that supported LCOR's LEED-CS Gold application include low-VOC materials, FSC-certified wood products, and post-industrial and post-consumer recycled steel, carpeting, gypsum wall board, and insulation. Individual offices boast their own thermal controls and 93 percent of interior spaces receive natural daylight. Bathrooms feature efficient plumbing fixtures and the tower includes a number of unspecified renewable power installations.