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John Omahen

Professional Expertise:

John Omahen is a plumbing expert and general contractor with over 25 years of experience in residential and commercial construction in San Diego area. As a consultant he has been retained on over 1,400 construction defect cases as a forensic expert in plumbing and general contractor.

Having owned a plumbing / general contracting company since 1989, his experience includes a variety of projects such as custom homes, multi-family units, commercial property, apartment complexes and large remodel projects. He has been involved in all phases of construction including cost estimating, lay-outs, contract negotiation, site supervision and employee management.

Areas of Expertise:

  • Commercial Plumbing
  • Residential Plumbing
  • Cost Estimating in fields plumbing, mechanical and electrical
  • Construction Forensics


  • California B General Contractor's License No. 567655
  • C36 Plumbing Contractor

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