From construction defect analysis to delay disputes and damage quantification, Garrett Johnson provides expert witness services built on 20+ years of hands-on construction management.
Expert witness services for plaintiff and defense counsel across the full spectrum of construction disputes.
Identifying deviations from plans, specs, and industry standards, from workmanship failures to code violations. Garrett evaluates defects with the eye of a licensed general contractor, not just a consultant.
Learn more →Quantifying monetary losses from construction disputes using actual cost data and causation analysis. Covers labor inefficiency, material escalation, extended general conditions, and lost productivity.
Learn more →CPM schedule analysis, delay attribution, and productivity loss measurement for scheduling disputes. Garrett's PSP certification and project management background make him a credible voice on what actually caused the delay.
Learn more →Evaluating the merit, damages, and documentation behind complex construction claims. Works with both plaintiff and defense counsel to build or challenge claims from the ground up.
Learn more →Calculating reasonable and necessary repair costs for construction defects, damage, and disputes. As a licensed GC, Garrett knows what repairs actually cost, not just what they look like on paper.
Learn more →Deposition, arbitration, and trial testimony grounded in 20+ years of construction project management. Clear, credible, and built to hold up under cross-examination.
Learn more →CPM scheduling, earned value analysis, and cost engineering for litigation support and dispute resolution. Garrett's PSP and CCP certifications back his analysis of baseline vs. as-built schedule impacts.
Learn more →Serving as an independent Owner's Project Manager on complex commercial projects, providing neutral oversight, cost control, and schedule management on behalf of the owner.
Discuss your project →Three things that make the difference between an expert who gets challenged and one who gets results.
Twenty-plus years managing complex commercial construction projects gives Garrett a perspective no classroom can provide. He knows the sequencing pressures, RFI backlogs, subcontractor coordination failures, and schedule realities that drive disputes. That field knowledge makes his analysis credible to judges and juries alike.
PSP, CCP, CCM, and a Licensed General Contractor in four states. These aren't honorary designations. They represent tested expertise in scheduling, cost engineering, and construction management that opposing counsel has to contend with at deposition and trial.
Garrett works with plaintiff and defense counsel nationwide. He doesn't have a side. He has an opinion grounded in facts, documents, and decades of hands-on experience. That objectivity is what makes his testimony hold up when it matters most.
Garrett works with plaintiff and defense counsel nationwide. Reach out to discuss your case, timeline, and the type of expert analysis you need.
Discuss Your Case →