Johnson, Debois & Forrest


Santa Rosa Structural Engineering / Code Consulting

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About JDF


Johnson, DeBois & Forrest was founded in 1991 by three partners (Kelly Johnson, Jeff DeBois & Mark Forrest) under the name of Johnson, DeBois & Associates. Since then, the company added to it's personnel, and changed it's name to Johnson DeBois & Forrest.

JDF is a mid-size firm, located in Santa Rosa, made up of licensed principal engineers, associate engineers, CAD drafters and administrative staff. We are unique in the engineering community because of our strong building code background

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Structural Engineering

Structural Analysis

Structural Drawings


Johnson DeBois & Forrest is a Structural Engineering and Code Consulting Firm that provides structural support services for a wide range of projects such as:

  • Custom homes, subdivisions, apartments, additions and remodels
  • Commercial buildings for office, retail, warehouse, winery, church and hotel establishments
  • Barns, riding arenas and agricultural buildings, custom pools
  • Third party plan checking for life/safety and structural design

We make every effort to keep the lines of communication open with our clients. We know how overwhelming and intimidating the building process can be. We have found that a client who is more informed about building code requirements will be less likely to become frustrated during the design process. We work closely with Architects, Builders, Designers and Clients to ensure design continuity.

We are committed to providing the highest level of service and maintaining professional and friendly relationships with all of our clients.

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Ready to start your next project with us? That's great! Give us a call or send us an email and we will get back to you as soon as possible!