Department of Defense NAICS 561621 and PSC C1AA contractors

Security Systems Services (except Locksmiths). ARCHITECT AND ENGINEERING- CONSTRUCTION: OFFICE BUILDINGS. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Defense.

Department of Defense · NAICS 561621 · PSC C1AA

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$584,241,816

State overlap

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 561621 and PSC C1AA

Caddell Construction Co. (de), LLC

Montgomery, AL

Caddell Construction Co. (de), LLC is a federal category business profile based in Montgomery, AL. The current public data layer shows $56,701,173 in visible federal obligations across 67 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.

$584,241,816