Commercial construction. CORE Construction is a Construction Manager at Risk, Design-Build, General Contracting, and Job Order Contractor with over 1,200 employees providing annual revenue in excess of $1 billion. CORE has a proven track record of providing exemplary services to a wide range of clients in the K-12, municipal, higher education, multifamily, healthcare, and federal markets. We have 16 regional offices in seven states and a history reaching back over 80 years. At CORE, our mission is to earn the Trust of our employees, building partners and clients. This is done through adherence to our core values: Integrity, Fairness, Continuous Improvement and Results.