Principal Engineering, Inc.
Improving the PRINCIPAL Infrastructure of our World
Explore capabilities, project experience, and office locations to build your shortlist.
Improving the PRINCIPAL Infrastructure of our World

Master Planning and Conceptual Design.
Cranston, RI+1

Building commissioning and retrocommissioning services
Santa Clara, CA

Senior-level naval HVAC&R and chilled water systems engineering

Building Partnerships, Designing a Greener Future
San Antonio, TX+1

Structural Engineering and Commercial Building.
Fontana, CA

Design, Build, and Sustain a Better World
Springville, NY+4

Making a Difference Through Engineering
Lakewood, CO+2

Engineering solutions to enhance communities
Greensboro, NC+6

An Engineering Partner For Your Evolving Needs
Woodbury, MN+3

Complete Design Services for Better Building Projects
Kingston, NY
Proven Designs. Practical Results.
Anchorage, AK
Comprehensive engineering and technical consulting services for building design and infrastructure
Tarzana, CA

Turnkey EPC Solutions for Bulk Material Handling Systems
Chicago, IL
Fire Protection Engineers serving the Western US
San Diego, CA+1

Engineering Performance. Delivering Innovation.
San Diego, CA

Building tools and offering services to quantify human vibration
Plano, TX

MEP Design Engineers Specializing in Achieving Excellence
New York, NY

Engineering services from concept to production, including design, simulation, and manufacturing
Charlotte, NC

Teaming with Your Community to Make a Difference
San Ramon, CA+9

Design & Research Strategy and Product Requirements Definition.
San Diego, CA
Mechanical - Electrical - Plumbing Engineers
Tonganoxie, KS
Precision commissioning, testing, and cleanroom certification services nationwide.
Lee's Summit, MO

Specialized MEP Engineering & Renovation Solutions
Tallahassee, FL