400 Westlake is ‘Blazing a new trail’ as one of the world’s greenest buildings comes to South Lake Union

Here comes 400 Westlake, a 15-story, solar-powered South Lake Union project that is designed to produce more energy than it uses. This, plus a robust water recycling program, will make it the most sustainable office building of its size in the world, according to the developer, Martin Selig Real Estate.

For Jordan Selig, the legendary developer’s environmentalist daughter, 400 Westlake is a passion project, but it still had to make economic sense. “We are not building this with bottomless pockets. This is a commercial venture for us,” she said.