Sosi-77 Construction LLC

Company facts

Self-certified in SAM.gov

• For Profit Organization
• Limited Liability Company

Entity structure

Partnership or Limited Liability Partnership

NAICS codes registered in SAM.gov

• 237990 Other Heavy and Civil Engineering Construction Primary
• 221111 Hydroelectric Power Generation
• 221112 Fossil Fuel Electric Power Generation
• 236210 Industrial Building Construction
• 236220 Commercial and Institutional Building Construction
• 237110 Water and Sewer Line and Related Structures Construction
• 237120 Oil and Gas Pipeline and Related Structures Construction
• 237130 Power and Communication Line and Related Structures Construction

Corporate family

• Sos International LTD Parent R4G8JH5CDJG2
  • Sosi-77 Construction LLC R2TGLZRZCLC6

SAM.gov registration date

Mar 6, 2017

Physical address

1881 Campus Commons Dr #500, Reston, VA 20191, USA

Website

sosi.com

Founded

1989

Employees

1K-5K

Estimated annual revenue

$500M-$1B

Industry

1. Industrials
2. Commercial & Professional Services
3. Professional Services
4. Consulting

SIC code

87 Engineering & Management Services

Profiles

• LinkedIn
• X
• Facebook
• Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated May 26, 2026.