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General Services Administration NAICS 236220 and PSC Y1AA contractors

Commercial and Institutional Building Construction. CONSTRUCTION OF OFFICE BUILDINGS. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under General Services Administration.

General Services Administration · NAICS 236220 · PSC Y1AA
Last updated: April 7, 2026

Visible recipients

13

Mapped obligations

$58,570,850,831

State overlap

4

Top recipients

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

Bl Harbert International LLC

Birmingham, AL

Bl Harbert International LLC is a federal category business profile based in Birmingham, AL. The current public data layer shows $1,013,761,418 in visible federal obligations across 210 awards or transactions. Department of State appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1AA.

$19,246,155,694

Walsh Federal LLC

Chicago, IL

Walsh Federal LLC is a federal category business profile based in Chicago, IL. The current public data layer shows $406,413,501 in visible federal obligations across 169 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1BZ.

$2,491,070,299

Clark Construction Group LLC

Bethesda, MD

Clark Construction Group LLC is a federal category business profile based in Bethesda, MD. The current public data layer shows $399,234,980 in visible federal obligations across 109 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1AA.

$7,890,697,650

Gilbane Building Company

Baltimore, MD

Gilbane Building Company is a federal category business profile based in Baltimore, MD. The current public data layer shows $346,060,830 in visible federal obligations across 5 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y142.

$655,414,477

Clark Construction Group - California, LP

Costa Mesa, CA

Clark Construction Group - California, LP is a federal category business profile based in Costa Mesa, CA. The current public data layer shows $244,104,223 in visible federal obligations across 17 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1AA.

$1,204,678,056

Hensel Phelps Construction CO

Tysons Corner, VA

Hensel Phelps Construction CO is a federal category business profile based in Tysons Corner, VA. The current public data layer shows $177,437,285 in visible federal obligations across 60 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1JZ.

$17,232,431,854

Brasfield & Gorrie LLC

Birmingham, AL

Brasfield & Gorrie LLC is a federal category business profile based in Birmingham, AL. The current public data layer shows $173,509,129 in visible federal obligations across 66 awards or transactions. General Services Administration appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1AA.

$4,583,551,112

Olgoonik Diversified Services LLC

Colorado Springs, CO

Olgoonik Diversified Services LLC is a federal 8a program participant profile based in Colorado Springs, CO. The current public data layer shows $161,619,504 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Z2JZ.

$349,278,584

M. A. Mortenson Company

Minneapolis, MN

M. A. Mortenson Company is a federal category business profile based in Minneapolis, MN. The current public data layer shows $7,418,167 in visible federal obligations across 59 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y199.

$3,522,156,183

Christman Company, The

Lansing, MI

Christman Company, The is a federal category business profile based in Lansing, MI. The current public data layer shows $3,229,863 in visible federal obligations across 14 awards or transactions. General Services Administration appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Z2AA.

$460,842,639
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