Experience Matters After several years of employment as a litigation consultant under the study of several well-know litigation consultants and Bay Area builders, founder Gregg de Haan decided it was time to move forward and establish his own firm.

de Haan & Associates is a full service forensic construction consulting firm providing investigation, research and litigation services for the construction industry. We are retained by attorneys, building owners, home-owner associations and contractors in both Northern and Southern California

Specialties include:

  • Field investigation services
  • Forensic reports
  • Photo and video documentation
  • Project costing
  • Property loss analysis
  • Product failure analysis
  • Waterproofing consulting
  • Water testing
  • Construction defects
  • Expert witness testimony
  • Snow country building specialists

Our Philosophy

The firm is founded on two basic concepts, Industry Experience and Integrity. The firm is compiled of a balanced mix of highly talented Contractors, Electricians and Engineers. The goal is to provide a “valuable package” for our clients’ various needs. The firm’s philosophy is simple; provide a group of experts much like a building is originally constructed to get a balanced, educated opinion for fair resolution.

The building trade faces many challenges:  Man-power/woman-power coordination, tight schedules, adverse building environments, fiscal constraints and challenging design, which often times leads to construction defects. Given the above listed challenges, de Haan & Associates Construction Consulting was established.