Olive 8 is a 140 m (460 ft), 39 floor mixed-use skyscraper in Seattle, Washington. It has 229 residential condominium homes above a Hyatt Hotel. It is located at Eighth Avenue and Olive Street in downtown Seattle and is the largest residential building in the city. The hotel opened January 5, 2009 and the first homeowners were scheduled to close on their homes late February 2009.
The building has one of the largest green roofs in downtown Seattle, 8,355 sq ft (776.2 m2), and was developed by R.C. Hedreen and designed by Gluckman Mayner Architects, the architects for The Andy Warhol Museum in Pittsburgh, Pennsylvania, and the Dia Center for the Arts in New York City.
The complex was designed in an effort to reach LEED (Leadership in Energy and Environmental Design) Silver Certification with its energy-efficient glass facade, low-flow plumbing fixtures, dual-flush toilets, rooftop garden between the towers, and efficient condensing boiler.