It’s impossible to deny that Seattle is at the forefront of sustainable building design in the US. Although there are more than 500 LEED-certified buildings in the city, LEED only lessens the damage of large construction projects. More developers are aiming for a Living Building Challenge, which creates net-zero buildings (and Seattle already has twice the number of certified projects than most other US cities). In order to reach these ambitious goals, integrated design is becoming increasingly important to the building process. Many investors see it as a serious commitment of both money and time, a commitment they are often unwilling to make. But Seattle’s variety of green buildings prove that integrated design produces structures that are economic, environmental, and enjoyable to work in.