Wednesday, February 15, 2012
Existing buildings – in their physical presence, design, and operations - challenge the goal of sustainability in the built environment. Older buildings can be leaky, inefficient, and even unhealthy, and they typically do not perform well against the expectations that we draw from today’s green building techniques and technology.
There is evidence that green building programs are impacting the existing building stock through retrofit programs offered in LEED and others. The number of projects certified under LEED for Existing Buildings: Operations and Maintenance (EBOM) surpassed those certified under its new construction counterpart in 2009. Spending on remodeling and retrofits has been on the rise and is predicted to grow to $10.1 billion-$15.1 billion by 2014. Recently, the USGBC announced that LEED-certified retrofits have outpaced new construction certifications on a cumulative basis.
We might view green retrofits of existing buildings as significant. Of course, the past is a major obstacle for achieving sustainability in the built environment, and the provision of alternatives to “business as usual” in existing structures is itself a victory. In addition, and perhaps more importantly, the growth in green retrofits suggests that sustainability may involve changes in people as well as buildings.
- Keith Hirokawa