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Multnomah County Building Green Roof


A mix of sedums, fescues, wildflowers, perennials and ornamental grasses resemble an open meadow atop the Multnomah County Building. The green roof, winner of a People’s Choice Award, is highlighted by a public viewing area with interpretation boards describing the design, construction process and environmental benefits.

Portland Building Green Roof


To top off the well-known Michael Graves building icon in downtown Portland, we designed a green roof that includes the main and penthouse rooftops. The green roof is a symbol of Portland’s commitment to sustainable development. Stormwater runoff will be monitored by The Bureau of Environmental Services for the City of Portland.

Multnomah County Library Ecoroof


Portland’s historic downtown library is now a “green building”. We began by conducting a feasibility evaluation on tray and unit type green roof construction products. Our final design for the green roof included a 3-inch thick tray system with built-in irrigation. The plant palette included a variety of extremely drought tolerant sedums.