Lon Determan

Lon M. Determan, S.E.

Principal
About

Lon M. Determan, S.E., has been part of the Miyamoto Building Structural team since 1995. As a Principal based in the Sacramento office, Lon brings more than 30 years of leadership and expertise in building structural seismic design, historic preservation, and essential service facilities, seismic safety assessments, certifications, and rehabilitation. A licensed Structural Engineer (CA S4654) and Civil Engineer (CA C57932), Lon is also certified by the California Office of Emergency Services (OES) as a Disaster Service Worker and holds OSHA certifications. He is widely respected for his deep technical knowledge, code expertise, and thoughtful approach to complex projects.

Professional Licenses

  • Structural Engineer, CA S4654
  • Civil Engineer, CA C57932

Certifications

  • Occupational Safety and Health Administration (OSHA CFR 1910.134- unrestricted)
  • OSHA Asbestos Class IV
  • California Office of Emergency Services (OES) Disaster Service Worker
CREDENTIALS
Learn more about our Sacramento Office

Lon M. Determan, S.E.

Lon M. Determan, S.E., has been part of the Miyamoto Building Structural team since 1995. As a Principal based in the Sacramento office, Lon brings more than 30 years of leadership and expertise in building structural seismic design, historic preservation, and essential service facilities, seismic safety assessments, certifications, and rehabilitation. A licensed Structural Engineer (CA S4654) and Civil Engineer (CA C57932), Lon is also certified by the California Office of Emergency Services (OES) as a Disaster Service Worker and holds OSHA certifications. He is widely respected for his deep technical knowledge, code expertise, and thoughtful approach to complex projects.

Professional Licenses

  • Structural Engineer, CA S4654
  • Civil Engineer, CA C57932

Certifications

  • Occupational Safety and Health Administration (OSHA CFR 1910.134- unrestricted)
  • OSHA Asbestos Class IV
  • California Office of Emergency Services (OES) Disaster Service Worker

Certification

S.E.

Market Sector Specialty

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Project Highlights

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Projects

Riverside University Health System Behavioral Health Campus

The Wellness Village is a medical campus that aims to transform healthcare by integrating behavioral [..]

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