C. Overaa & Co. was ranked No. 256 on Engineering News-Record magazine s top 400 list of companies for 2005. The company is one of the nation s leading construction firms. C. Overaa & Co. is a fourth-generation, family-owned business, and one of the largest construction companies in the Bay Area. The organization is based in Richmond, Calif. C. Overaa & Co. provides an array of pre-construction services, such as planning, cost estimating, budgeting and scheduling; construction services, such as subcontractor management and project management; and design and build services, such as constructability analyses. The company has experience in constructing parking structures, water and wastewater treatment facilities, industrial properties, seismic retrofitting, religious and community facilities and educational institutions.