Baltimore, one of the first U.S. municipalities to mandate LEED, has adopted the International Green Construction Code 2012 as an overlay to the City's building, fire, and related codes. The new rules take effect April 1, 2015 and apply to new construction as well as repairs, additions and alterations.

According to Green Building Law Update, published by Stuart Kaplow, an environmental attorney:

As progressive as this bill is, it should not be lost that Baltimore is representative of a very limited number of jurisdictions mandating new construction and renovation of both private and public buildings must be green. After the 2014 mid-term elections, many of today’s newly elected conservatives believe that a voluntary, non-mandatory approach to environmental protection is the best hope for stewardship of our planet. It is that same belief that has led to the broad brand and wide market share acceptance of LEED as a voluntary green building rating system.

Read More and check out the following videos to learn more about the International Green Construction Code.