Psomas

Company facts

Self-certified in SAM.gov

• For Profit Organization
• Subchapter S Corporation

Entity structure

Corporate Entity (Not Tax Exempt)

Other NAICS codes in SAM.gov

• 541310 Architectural Services
• 541340 Drafting Services
• 541350 Building Inspection Services
• 541360 Geophysical Surveying and Mapping Services
• 541370 Surveying and Mapping (except Geophysical) Services
• 541511 Custom Computer Programming Services
• 541512 Computer Systems Design Services
• 541611 Administrative Management and General Management Consulting Services

Show all 12

• 541618 Other Management Consulting Services
• 541690 Other Scientific and Technical Consulting Services
• 541990 All Other Professional, Scientific, and Technical Services
• 924110 Administration of Air and Water Resource and Solid Waste Management Programs

Corporate family

• Corporate Headquarters Parent Psomas · Los Angeles, CA D2CJY3JLPSC5
  • Roseville

SAM.gov registration date

Nov 21, 2003

Physical address

1410 Rocky Ridge Dr Suite 300, Roseville, CA 95661, USA

Website

psomas.com

Founded

1946

Employees

251-1K

Estimated annual revenue

$100M-$250M

Industry

1. Industrials
2. Capital Goods
3. Construction & Engineering
4. Civil Engineering

SIC code

87 Engineering & Management Services

Profiles

• LinkedIn
• X
• Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Apr 16, 2026.