Department of the Interior NAICS 236220 and PSC Y299 contractors

Commercial and Institutional Building Construction. CONTRUCT/ALL OTHER NON-BLDG FACS. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 236220 · PSC Y299

Last updated: April 13, 2026

Visible recipients

Mapped obligations

$1,068,661,120

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 236220 and PSC Y299

Granite Construction Company

Watsonville, CA

Watsonville, CA | 56 awards | Top agency Department of Defense | NAICS 237310

$792,324,394

Tetra Tech Ec, Inc.

San Diego, CA

San Diego, CA | 5 awards | Top agency Department of Defense | NAICS 562910

$188,973,838

Sealaska Environmental Services, LLC

Juneau, AK

Juneau, AK | 20 awards | Top agency Department of Defense | NAICS 562910

$8,133,770

Tunista Construction LLC

Tacoma, WA

Tacoma, WA | 5 awards | Top agency Department of Defense | NAICS 236220

$79,229,118

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