GCM Group

About GCM Group

GCM Group provides expert witness and litigation support for complex construction disputes, delivering data-driven analysis and industry expertise to help legal teams, insurers, owners, and contractors resolve claims. With over 20 years of construction experience, the firm combines practical judgment with forensic precision to produce insights that stand up in mediation, arbitration, and court. Their services span schedule delay analysis, change order entitlement evaluation, cost and damages quantification, and expert reports, rebuttals, and testimony. In addition to litigation support, they offer strategic cost management and proactive project controls to keep projects on track and prevent disputes.