In the midst of a population boom, Portland is in need of more residential space. With the city’s current infrastructure not able to keep up with that need, new private developments have to accommodate a growing population without damaging the surrounding environment. Hassalo on Eighth was conceived as an EcoDistrict—a series of buildings that share sustainable energy, water, and waste infrastructure—to ease the city’s housing squeeze, revitalize a neighborhood in need of development, and allow its tenants to reduce their carbon footprint by nearly a third.