Guardian Construction Management Services, Inc. | 1,097 followers on LinkedIn. On Time, Under Budget Since 1973 | Guardian Construction Management Services is a construction management firm established in 1973. We offer a full service approach to management of construction projects, which results in a single source of accountability for our clients. We partner with the Owner, Architect, funding sources, and other team members to keep your initial construction costs down and recommend ways to save on long-term operating costs.