Existing Buildings

The average age of commercial buildings in the United States is 41.7 years, and 80% of the housing stock in this country is 15 years old or older. Making up the vast majority of our building stock, buildings that aren't brand new also offer significant potential for energy savings through upgrades.

Every building undergoing renovation is likely to trigger mandatory energy conservation measures under the International Energy Conservation Code (IECC) and ASHRAE Standard 90.1. However, these measures are often overlooked because of low awareness about how energy codes apply to building renovations.

IMT is working to bridge this gap by producing brochures, case studies, and other resources, and providing technical assistance to explain how the IECC applies to additions and alterations. IMT also works in collaboration with our national and regional partners to develop sensible code change proposals to improve the understanding of the IECC’s application to work on existing buildings.