Department of the Interior NAICS 238220 and PSC R499 contractors

Plumbing, Heating, and Air-Conditioning Contractors. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap under Department of the Interior.

Department of the Interior · NAICS 238220 · PSC R499

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$59,442,052

State overlap

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 238220 and PSC R499

The Whitestone Group, Inc.

Reynoldsburg, OH

Reynoldsburg, OH | 67 awards | Top agency Department of Transportation | NAICS 561612

Honeywell Building Solutions Ses CORP

Minneapolis, MN

Minneapolis, MN | 6 awards | Top agency General Services Administration | NAICS 541330

Southland Industries

Sterling, VA

Sterling, VA | 15 awards | Top agency Department of Defense | NAICS 541330

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