Small Business Administration NAICS 237110 and PSC Y1JZ contractors in California

Water and Sewer Line and Related Structures Construction. CONSTRUCTION OF MISCELLANEOUS BUILDINGS. Use this deepest state-buyer cross-code page to see which visible contractors sit in the exact overlap of buyer, geography, industry, and product-service lane.

California · Small Business Administration

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$692,925,058

Cross-code depth

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Top recipients

Visible recipients tied to Small Business Administration, California, NAICS 237110, and PSC Y1JZ

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.

$692,925,058