Gelco Construction is a family-owned company that has been in business for over 50 years.  Gelco is a commercial Sub-Contractor with no COBID certifications primarily serving the Willamette Valley and Central Coast. The company  operates in two divisions, Civil and Concrete. Our Civil division specializes in excavation, grading, storm and sanitary sewer lines, water lines, public and private street reconstruction, and subdivision work. The Concrete Division specializes in site concrete, curbs and sidewalks.