ONEC is a multidisciplinary collaboration of three companies offering a complete solution to all facets of industry. The companies are: ONEC Construction, ONEC Engineering, and ONEC Inspections.

From commissioning and start-up services to construction support to project management, our team of professionals works directly with clients to design and execute projects. Clients rely on our cost-effective, timely expertise to address critical issues to minimize production downtimes.

Our services from concept to completion include:


  • Feasibility studies
  • Risk assessments

Project Front-end Support

  • Bid preparation
  • Procurement
  • Estimating
  • Execution planning and scheduling

Multi-Discipline Detail Engineering

  • Mechanical/HVAC
  • Civil/Structural
  • Electrical
  • Instrumentation and Controls
  • 2D and 3D Designs

Project Back-end Support

  • Shop testing
  • Field supervision and construction management
  • Commissioning
  • Start-up
  • As-built drawings