W. John Irwin II, PE, CFCC

Senior Director

Photo of Jack IrwinPhone: 213.369.6991
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Location: San Francisco, CA

Jack Irwin has over 40 years of experience in engineering, design, construction, construction management, property inspection and assessment, and claims and disputes.

His expertise is in the analysis and resolution of construction claims and disputes involving real estate, buildings and construction projects, with special expertise in Mechanical Engineering, including HVAC and plumbing systems. 

He has served as an arbitrator and has testified as an expert witness. He has served attorneys (public and private), insurance companies, owners, public agencies (local, state and federal), developers, real estate professionals, contractors, designers and property managers. 

Jack has consulted on projects in the Western States: California, Nevada, Utah, Oregon, Washington, Hawaii and Alaska, and also in Virginia, Louisiana, Missouri, Connecticut, Guam and The Bahamas.


Selected Project Experience
  • Construction Claims Expertise: evaluation of changes, change orders, extra work, incomplete work; evaluation of and preparation of claims; scheduling, delay, and acceleration analysis; cost overrun/ disruption analysis; evaluation of entitlement and damages, including extended overhead.
  • Forensic/Defect Expertise: HVAC and plumbing systems; codes and standards; design errors and omissions; construction defects and failures; repairs and cost estimating.
    Property Inspection and Assessment Expertise: due diligence inspections; review and inspection of contractor work; punch list and completion disputes; failure analysis; operability and maintenance; disaster assessments – earthquake, hurricane, fire, FEMA; insurance claims for property damage.
  • Dispute Expertise: expert witness in arbitration and court (state and federal); assistance and presentations in ADR forums – settlement and mediation; discovery assistance; review of document productions; contract review.
  • Forensic Project Experience:
    • Government/Public Buildings: civic center, libraries, police headquarters, recreation, military, maintenance facility, criminal justice, postal stations, and fire stations
    • Educational: K-12 schools, college and university
    • Commercial: retail, malls, office, entertainment, hospitality (resorts, motels, hotels and restaurants), film sets
    • Healthcare: hospital, medical laboratory, medical office
    • Industrial/Infrastructure: water and waste water, power, laboratory, telecommunication, road and highway, industrial
    • Housing: residential, including mixed use, multi-family (apartment and condominium), single-family, and "high-end" residences, including high-rise
    • Aviation: international airport terminals
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List of Professionals



Lehigh University
B.S. Mechanical Engineering, with honors, 1968

Fuller Theological Seminary, M. Divinity, 1975


Professional Engineer (PE) Mechanical, California (active), Nevada (inactive), Washington (inactive)

Certified Forensic Claims Consultant (CFCC), 2007, by the AACE International


American Society of Plumbing Engineers

American Society of Heating, Refrigerating and Air-Conditioning Engineers

Adjunct faculty in the Construction Management Program at California State University-Dominguez Hills, Carson, CA, 1992 to present.
Teaching courses on Construction Scheduling, Bidding and Change Orders

Adjunct faculty in the Construction Management Technology Program at the College of the Canyons, Santa Clarita, CA, 2009 to present.
Teaching courses on construction law and contracts, scheduling, construction management, and plumbing code and systems.