Location · California
Engineering Companies in California
Compare engineering companies in California — civil, structural, telecom, environmental, industrial, manufacturing, product, and energy engineering firms with PE-licensed teams.
How to find the right California engineering firm
California engineering companies span everything from large multidisciplinary firms in Los Angeles and the Bay Area to boutique consulting firms in Sacramento, San Diego, and the Inland Empire. The right firm depends on discipline, project scale, and the California AHJs you’ll permit through.
California is a practice-act state for civil, electrical, and mechanical engineering — stamped drawings must be sealed by a PE licensed with the California Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG). Out-of-state stamps are not accepted.
What California engineering consulting firms typically deliver
- Feasibility studies, conceptual design, and basis-of-design memos
- PE-stamped construction documents and permit submittals
- CEQA and environmental review coordination
- Construction-phase services, RFIs, and submittals review
- Owner’s engineer, expert witness, and program management
Browse California engineering firms by discipline
Site civil, grading, drainage, ROW, and land development across California metros.
Seismic-code structural design for buildings, telecom, and industrial projects.
Fiber, wireless, pole loading, and small-cell engineering statewide.
CEQA, water, air, hazardous materials, and remediation engineering.
Process, manufacturing, plant layout, automation, and productivity engineering.
Tooling, line design, throughput, and lean manufacturing engineering.
Mechanical, electrical, and embedded product design for California OEMs.
Solar PV, battery storage, microgrid, and EV infrastructure engineering.
California metros
Related pages
FAQ
How do I find the right engineering company in California?
Start with the discipline and project type (civil site work, structural, telecom, industrial, energy), confirm the firm carries a PE licensed by the California BPELSG, and verify they have recent in-state project experience with the AHJs you'll permit through.
Are out-of-state engineering firms allowed to work in California?
An out-of-state firm can lead a project, but any stamped construction documents, calculations, or permit submittals must be sealed by an engineer licensed in California — and the firm must be authorized to offer services under California's organization rules.
What types of engineering consulting firms operate in California?
California hosts large multidisciplinary firms (civil, structural, MEP), specialty firms (telecom, environmental, industrial, manufacturing, product, renewable energy), and boutique consulting firms focused on permitting, feasibility, and expert services.
Where are most California engineering firms located?
Los Angeles, the San Francisco Bay Area (San Francisco, Oakland, San Jose), San Diego, Sacramento, the Inland Empire, and Orange County concentrate the largest share of California engineering companies.
How do I verify a California engineering firm?
Check individual PE licenses with the California Board for Professional Engineers, Land Surveyors, and Geologists (BPELSG), and confirm the firm's organization registration. EngineerMint surfaces verified license data on firm profile pages.