South Cooper Mountain: Main Street Beaverton, Oregon

The South Cooper Mountain, Main Street development is a public-private partnership that consists of three multi-family buildings as well as 40,000 square-feet of commercial space and community-use facilities. The site design includes low-impact stormwater management techniques including vegetated planters and swales. Landscaping consists of native and drought-tolerant plant species and the site’s transit design of the TriMet stop will support multimodal transportation.

Affordable Housing with A Sustainable, Accessible Design

In support of the project’s residential uses, the site received funding through the Metro Affordable Housing Bond, administered by the City of Beaverton as well as Oregon Housing and Community Service (OHCS) tax credits. As a first for South Cooper Mountain, an urban plaza was also included in the design to complement the project’s varied utilization. That park project consists 0.25-acre plaza that will be owned and operated by Tualatin Hills Parks and Recreation District (THPRD). With affordable housing goals accounted for, the project is also designed to exceed high universal design standards, going above and beyond code to provide accessible features. In designing the residential buildings, a sustainable approach in accordance with universal design principles includes solar-ready and electric vehicle (EV)-ready infrastructure. All together, these sustainable elements position the South Cooper Main Street project to be certified with at least Earth Advantage Silver standards. A multi-day design charrette with City of Beaverton staff delivered a site design that met the needs of the community, the jurisdiction, the developer and future residents and tenants. With a true multidisciplinary approach, Otak managed everything from land use planning and entitlement to site surveying and construction documentation to complete the design for this mixed use development.

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Residential Architecture
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Matthew Neish

Business Unit Leader

Professional Registrations

Registered Architect (RA): Washington
Survey & Mapping
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Jon Yamashita

Director of Surveying

Civil Engineering
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Chad Weiser


Director of Federal Business

Structural Engineering
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Scott Nettleton

Manager of Bridges & Structures, Oregon & SW Washington