Contact this Expert Witness

  • Additional States: California
  • Company: Community Engineering Services, PLLC
  • Phone: (425) 361-8499
  • Website:

Specialties & Experience of this Expert Witness

General Specialties:

Mechanical Engineering and Real Estate

Keywords/Search Terms:

plumbing, pipe, re-pipe, leaks, failures, Inspection, construction, water damage, feasibility, epoxy liner, CPVC, Aquatherm, PEX, Galvanized, copper, risk assessment, machinery, insurance, defect, standard of care, Blockchain, smart contract adjudication.


BSME, University of New Haven; MBA, Seattle University

Years in Practice:


Additional Information

Thirty-five years of practical engineering experience across the aerospace, building construction, and technology industries. Bachelors of Science in Mechanical Engineering and Masters degree in International Business Administration. Expert Witness at the intersection of mechanical engineering, business practices, and standard of care.  Technical specialties include plumbing systems (failures, leaks, defects and corrosion), building envelope failures resulting in mold or water damage, Real Estate transactions, mechanical failures due to improper maintenance or operation, Investigation, testing, and report writing. Excellent public speaking skills with the ability to explain complex matters in simple and accessible terms. Knowledgable in recent technologies such as blockchain, digital twin, and digital twin applications for the engineering professions. Experienced in cross border and international engineering practices. Registered professional engineer in California and Washington. Began career working as a mechanical fabricator and design engineer. Recruited by The Northrop Corporation developing composite structures for military aircraft.  Joined Hughes Aircraft Space and Communication Systems, designing precision mechanisms for satellite ejection from an orbiting vehicle.  Employed at Rockwell International as level 3 Test Engineer for the US Space Shuttle modernization program.  Employed at the Boeing Company as a commissioning agent and service manager leading investigations and resolving complex mechanical and business issues pertaining to new aircraft deliveries and in-service aircraft repairs for international clients. By adapting Aerospace methods to the building construction industry, founded CoEngineers, PLLC with the goal of helping HOAs, Condominium Communities, and other building owners to diagnose problems and navigate the world of contractors - often in an environment of competing interests.  CoEngineers, PLLC specializes in feasibility studies, condition assessments, failure investigations and renovations strategies for plumbing and building envelope systems largely resulting from the effects of corrosion, age, moisture, poor maintenance and high cost of failures. Business: founded several companies and understands the constraints of delivering product in an imperfect market. Technology: leader in the application of blockchain and related technologies to the engineering and STEM professions.  Education: Dan led a large international comparative education program related to the NAFTA mutual recognition for engineers, adjunct professor at City University of Seattle and CETyS University in Baja California.  Volunteer: Appointed member (later, president) of the planning board for the City of Edmonds, WA