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NAICS 237110 and PSC Y1BZ contractors in California

Water and Sewer Line and Related Structures Construction. CONSTRUCTION OF OTHER AIRFIELD STRUCTURES. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside California.

California · NAICS 237110 · PSC Y1BZ

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$811,814,849

Buyer overlap

Top recipients

Visible recipients in the California overlap of NAICS 237110 and PSC Y1BZ

Harper Construction Company, Inc.

San Diego, CA

Harper Construction Company, Inc. is a federal category business profile based in San Diego, CA. The current public data layer shows $277,967,049 in visible federal obligations across 51 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.

$811,814,849