John (Jack) P Diehl, AIA, NCARB, LEED AP Expert Witness
Curriculum Vitae

Contact this Expert Witness

  • Company: The Diehl Group Architects, Inc.
  • Phone: 760-487-1301
  • Cell: 858-449-4112
  • Fax: 760-487-1303
  • Website:

Specialties & Experience of this Expert Witness

General Specialties:

Architecture and Construction Defects

Specialty Focus:

Forensic Architect, Building Envelope, Construction Defects, Architectural Professional Liability, Water Intrusion & damage, ADA Consulting, Slip and Fall, Building Code, Arbitration/Mediation, Waterproofing, Roofs, Fenestration, Construction Administration, EIFS Consulting, Construction Standards


B.S. Archtecture, University of Texas, Arlingtion

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

Responsible for field investigations, failure analysis, building code research, development of repair solutions, trial preparation (1,000) cases) and expert witness testimony in over two hundred residential or commercial cases, in support of construction defect litigation. Perform technical investigations and research of suspected design and construction problems. Verify and compare as-built conditions, design parameters, building jurisdiction requirements and applicable industry standards of care. Establish and coordinate expert teams for project investigations. Provide reconstruction services, construction administration for Type I (High Rise) and Type V building types. Provide quality assurance, evaluation and supervision of in-progress construction for major commercial and high rise structures for conformance to design, material and workmanship standards. Provide expert services in regard to Architecturally related Personal Injury matters. AIA American Institute of Architects NCARB National council of Architectural Registration Boards LEED AP Leadership in Energy and Environmental Design Accredited Professional CSI-CDT Construction Specifications Institute Construction Document Technician General Contractor California, "B" License ICC International Code Council Licensed in the Following States: Arizona, California, Colorado, Florida, Hawaii, Nebraska, Nevada, New Mexico, Oregon, Texas, Utah, Washington, Wyoming