It's Sustainable Building Week by: Kohr Harlan Posted: Oct 16, 2019 / 05:27 AM PDT Updated: Oct 16, 2019 / 04:34 PM PDT SHARE PORTLAND, Ore. (KOIN) — Sustainable Building Week is underway and part of the eco-friendly effort is showing off zero-energy homes in Portland. More about Passive House Northwest Click here for tickets to Goal Zero Tour