L & M Underground, Inc.

Littleton, CO

UEI: HTNPEV2JM3M7
CAGE: 3WUW7
Primary NAICS: 237130 Power and Communication Line and Related Structures Construction
SAM.gov registration: Active through Sep 10, 2027

Company facts

Self-certified in SAM.gov: For Profit Organization

Subchapter S Corporation
Entity structure: Corporate Entity (Not Tax Exempt)
Other NAICS codes in SAM.gov: 237110 Water and Sewer Line and Related Structures Construction

237990 Other Heavy and Civil Engineering Construction

238910 Site Preparation Contractors
SAM.gov registration date: Jun 17, 2004
Physical address: 7529 Storm Mountain, Littleton, CO 80127, USA
Website: lmunderground.com
Founded: 2000
Employees: 11-50
Estimated annual revenue: $1M-$10M
Industry: Industrials

Capital Goods

Construction & Engineering
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Sep 11, 2026.

Vendor	Location	Primary NAICS
Underground Systems LLC UEI DF1LMKY1SK88	Suwanee, GA	237130 Power and Communication Line and Related Structures Construction
J D Barlow Construction, LLC UEI GA4DV3H5XD85	Menifee, CA	237990 Other Heavy and Civil Engineering Construction
Cannon Utility Services LLC UEI JDRAQFBLW5M6	Belleville, IL	237130 Power and Communication Line and Related Structures Construction
Atlas Trenchless, LLC UEI PY8RKKVGJTR8	Cold Spring, MN	237990 Other Heavy and Civil Engineering Construction
Boland Drilling UEI UKD9EENH1ZK5	Great Falls, MT	237110 Water and Sewer Line and Related Structures Construction

From the vendor's SBA profile

Horizontal directional boring up to 16 inches in diameter. Vacuum potholing. Trenching. Cable placement.

Yes. L & M Underground, Inc.'s SAM.gov registration is active through September 10, 2027.

L & M Underground, Inc.'s CAGE code is 3WUW7, and its Unique Entity ID (UEI) is HTNPEV2JM3M7.

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