HDR Environmental, Operations And Construction, Inc.

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

• 236220 Commercial and Institutional Building Construction
• 237310 Highway, Street, and Bridge Construction
• 238220 Plumbing, Heating, and Air-Conditioning Contractors
• 238910 Site Preparation Contractors
• 238990 All Other Specialty Trade Contractors
• 541310 Architectural Services
• 541330 Engineering Services
• 541690 Other Scientific and Technical Consulting Services

Show all 17

• 541713 Research and Development in Nanotechnology
• 561210 Facilities Support Services
• 561790 Other Services to Buildings and Dwellings
• 562112 Hazardous Waste Collection
• 562211 Hazardous Waste Treatment and Disposal
• 562910 Remediation Services
• 711510 Independent Artists, Writers, and Performers
• 712110 Museums
• 712120 Historical Sites

Corporate family

• HDR EOC Parent HDR Environmental, Operations And Construction, Inc. · Englewood, CO EKCVZLXL4MA8
  • HDR EOC

SAM.gov registration date

Oct 17, 2011

Website

hdrinc.com

Founded

1917

Employees

10K-50K

Estimated annual revenue

$1B-$10B

Industry

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

SIC code

87 Engineering & Management Services

Profiles

• LinkedIn
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• Facebook
• Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated May 15, 2026.