Bradley C. Hammerstrom, AIA, NCARB Expert Witness
Curriculum Vitae

Contact this Expert Witness

  • Company: The Diehl Group Architects, Inc.
  • Phone: (760) 487-1301
  • Website:

Specialties & Experience of this Expert Witness

General Specialties:

Construction Defects and Architecture

Keywords/Search Terms:

Forensic Architecture, Destructive Testing, Site Inspections, Construction Defects, Building Envelope, Roofing, Fenestration, Waterproofing, Exterior Claddings, Construction Drawings, Contract Administration, Slip and Fall, Building Code, Peer Review, Quality Assurance, Testimony.


Bachelor of Architecture, California Polytechnic State University, San Luis Obispo

Years in Practice:


Number of Times Deposed/Testified in Last 4 Yrs:


Additional Information

25+ years experience in construction defect litigation support and expert witness services for plaintiff and defense attorneys. Experience includes field investigations, water intrusion analysis, construction installation sequencing, code analysis, development of repair solutions, trial preparation and expert witness testimony. Projects include residential, commercial, and high rise in California, Nevada, Arizona, Colorado and Texas (licensed in 5 states). Experience also includes traditional architectural services for projects involving repair or reconstruction: architectural design, production of construction documents and contract administration. Experience includes consulting for architects and developers to provide peer-review of drawings, quality assurance site observations, evaluation of in-progress construction for conformance to the construction drawings and specifications and workmanship standards. AIA - American Institute of Architects NCARB - National council of Architectural Registration Boards Licensed in the Following States: California (Primary), Arizona, Colorado, Nevada, Texas