Industry-Respected Forensic Investigations With Consistent Results


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Timely, Precise and Complete Results

When something goes wrong, everything is urgent. With 120 building science experts on staff in key regions around the country, we don’t make you wait. Our professional structural, civil and mechanical engineers prioritize responsive, thorough communication. As practicing building consultants, we are up to date on the latest technology and are willing to design and stamp our repair recommendations. 


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Forensic Investigations for Nearly Every Type of Building Structure


Expert Witness

Our engineers, architects, and consultants provide expert witness services in cases of construction defect disputes, property loss appraisals, and builder’s risk claims.

  • Litigation Consulting
  • Deposition Testimony
  • Mediation Testimony
  • Arbitration Testimony
  • Trial Testimony
  • Property Loss Appraisals (Appraiser/Umpire)


Property Loss

We assist insurance companies to analyze pre- and post-loss risks, damage, and property claims resulting from natural or man-made events. 

  • Construction Consulting
  • Forensic Engineering
  • Roof Consulting
  • Appraisals & Umpiring
  • Damage Cost Estimating
  • Restoration Project Monitoring
  • Litigation Support 
  • Expert Witness Testimony
  • Subrogation Analysis
  • Builder’s Risk
  • Surety Consulting Services
  • Repair Design
  • Construction Administration
  • Construction Defect


“Lerch Bates’ staff was very responsive to our needs following a recent tornado event. They quickly contacted the insureds, scheduled site observations, and continually communicated to us the status of their investigations. Lerch Bates was instrumental in handling claims for clients in a way that made a very difficult situation surprisingly manageable.”