NAICS 237990Other Heavy and Civil Engineering Construction
Size Standard
$45 million
CMMC Level
Level 1 (most contracts)
Key Agencies
USACE, NAVFAC, Army, Air Force
Overview
Establishments primarily engaged in heavy and civil engineering construction projects not elsewhere classified, including water treatment plants, dams, and utility systems. Defense applications cover MILCON projects, hardened facility construction, and military utility infrastructure.
Common Contract Types
Contracting Agencies
Frequently Asked Questions
What CMMC level is required for NAICS 237990?
Level 1 for standard construction. Level 2 when MILCON projects involve hardened or classified facilities where construction documents contain CUI.
What is the SBA size standard for NAICS 237990?
The size standard is $45 million in average annual receipts.
What military construction projects use NAICS 237990?
Projects include hardened command bunkers, ammunition storage facilities, water treatment plant construction, fuel distribution systems, and military training range infrastructure.
Related NAICS Codes
Related Guides
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