About GCM Group

Precision-driven cost intelligence and forensic analysis for construction professionals & legal teams.

GCM Group specializes in two critical areas: expert witness services for construction-related disputes and strategic cost management for development and construction projects. With over 20 years of real-world construction experience—including field operations, cost control, and executive-level leadership—we provide clear, defensible analysis grounded in industry standards and practical knowledge.

Our expert witness and litigation support services focus heavily on schedule delay analysis, change order evaluation, and cost impact assessment. We prepare well-documented, objective reports that stand up in mediation, arbitration, and trial. Our forensic approach integrates contemporaneous document review, critical path analysis, and—where appropriate—modern tools such as structured data modeling and AI-assisted diagnostics to increase accuracy and efficiency.

On the cost management side, we support owners, developers, and project teams through early budgeting, schedule and risk reviews, vendor cost control, and change management. We deliver precise insights that help clients make smarter decisions at every project stage—from planning to closeout.

At GCM Group, we combine expert-level judgment with today’s most effective analysis tools to provide clarity in both construction execution and dispute resolution.