LEED for Existing Buildings -- A Whole New Ballgame

A requirement of the U.S. Government for renewing its lease of the EPA's Region 10 office in downtown Seattle is that the building obtain the U.S. Green Building Council's Leadership in Environment and Energy Design (LEED) Silver* certification for existing buildings (LEED-EB). According to the Puget Sound Business Journal, http://bit.ly/QItPb, the owners of 1200 Sixth Avenue in Seattle are planning to go two better and seek LEED-EB Platinum, which would make it the first such LEED-EB in Seattle with that designation and only the 14th in the world.

This is an important step since buildings account for nearly 40% of the greenhouse gas emissions in the U.S. While most of the attention on the LEED rating system has focused on new construction, bringing LEED concepts to the five million existing commercial buildings in the U.S. represents a much bigger carbon footprint reduction bang for the buck, although one that comes with its own challenges. Some of those issues were addressed by last year's revisions to the LEED-EB criteria to make them fit better with existing buildings. This article from an issue of "Greener Buildings" provides a good summary of the changes. http://bit.ly/ujGqv.

Other issues remain, not the least of which are the frozen credit markets and stalled commercial leasing that make it difficult for building owners to consider the expense of upgrading to LEED-EB when their bigger problem right now is hanging on to tenants who can pay the current rent. When the economy improves, however, the LEED-EB path could prove to be a whole new opportunity for both commercial real estate and the environment.

*[6/9 update -- Correcting the lease requirement for LEED Silver, not Gold]