General Services Administration NAICS 236220 and PSC Y1AA contractors

Commercial and Institutional Building Construction. CONSTRUCTION OF OFFICE BUILDINGS. Cross-code overlap under General Services Administration.

General Services Administration · NAICS 236220 · PSC Y1AA

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$58,570,850,831

State overlap

Top recipients

Visible recipients in the General Services Administration overlap of NAICS 236220 and PSC Y1AA

Bl Harbert International LLC

Birmingham, AL

Birmingham, AL | 210 awards | Top agency Department of State | NAICS 236220

$19,246,155,694

Walsh Federal LLC

Chicago, IL

Chicago, IL | 169 awards | Top agency Department of Defense | NAICS 236220

$2,491,070,299

Clark Construction Group LLC

Bethesda, MD

Bethesda, MD | 109 awards | Top agency Department of Defense | NAICS 236220

$7,890,697,650

Gilbane Building Company

Baltimore, MD

Baltimore, MD | 5 awards | Top agency Department of Health and Human Services | NAICS 236220

$655,414,477

Clark Construction Group - California, LP

Costa Mesa, CA

Costa Mesa, CA | 17 awards | Top agency Department of Defense | NAICS 236220

$1,204,678,056

Hensel Phelps Construction CO

Tysons Corner, VA

Tysons Corner, VA | 60 awards | Top agency Department of Defense | NAICS 236220

$17,232,431,854

Brasfield & Gorrie LLC

Birmingham, AL

Birmingham, AL | 66 awards | Top agency General Services Administration | NAICS 236220

$4,583,551,112

Olgoonik Diversified Services LLC

Colorado Springs, CO

Colorado Springs, CO | 20 awards | Top agency Department of Defense | NAICS 236220

$349,278,584

M. A. Mortenson Company

Minneapolis, MN

Minneapolis, MN | 59 awards | Top agency Department of Defense | NAICS 236220

$3,522,156,183

Christman Company, The

Lansing, MI

Lansing, MI | 14 awards | Top agency General Services Administration | NAICS 236220

$460,842,639

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