OAC Services, Inc. (now Consertus) Employee Directory
ConstructionWashington, United States51-200 Employees
Based in Seattle, Washington, OAC Services, Inc., now operating as OAC, a Consertus Company, is a mid-sized firm in the construction industry. It provides capital program management and advisory services that coordinate complex building initiatives by integrating technology, professional expertise, and problem-solving. As part of Consertus, the firm has expanded its scope through acquisitions. In April 2026, Consertus acquired CCS International, Inc., a capital project management and cost advisory firm headquartered in Oakbrook Terrace. Earlier in the same month, Consertus also acquired Airosmith Development Inc., to broaden its capabilities in telecommunications and renewable infrastructure.