Coterra is a civil engineering firm that provides design and consulting services to public and private entities. We offer site development and infrastructure solutions.  

Our Services

  • Community Building

    We’ve delivered civil engineering solutions in Seattle for 25+ years. Check out our projects.

    PROJECTS

  • Infrastructure

    We specialize in projects and responsive solutions that are practical and cost effective.

    SERVICES

  • Build

    We are a collaborative group of civil engineers based in Phinney Ridge, Seattle.

    TEAM