G.s.e. Construction Company, Inc.
Livermore, CA
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- US-LVK-7633, 7633 Southfront Rd # 160, Livermore, CA 94551, USA
- Website
- gseconstruction.com
- Founded
- 1980
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 87 Engineering & Management Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $111,266,600 |
| FY2025 | $9,741,900 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Interior | $109,487,800 | |
| 2 | International Boundary and Water Commission U.S.-Mexico | $1,778,800 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Ama Diversified Construction Group | Petaluma, CA | 237990 Other Heavy and Civil Engineering Construction |
| Carollo Engineers Inc. | Walnut Creek, CA | 541330 Engineering Services |
| Rsci | Boise, ID | 236220 Commercial and Institutional Building Construction |
| Westech Engineering, LLC | South Salt Lake, UT | 221310 Water Supply and Irrigation Systems |
| Perc Water Corporation | Fountain Valley, CA | 237110 Water and Sewer Line and Related Structures Construction |
About the company
G.s.e. Construction Company, Inc., a minority-owned, Hispanic American-owned corporation based in Livermore, California, operates as a prime contractor delivering water infrastructure construction, wastewater treatment facility design and repair, and water treatment equipment fabrication to federal civilian and defense agencies on a full-and-open basis with no recurring set-aside pattern. The vendor competes exclusively as a prime (100% of 106 awards across its footprint) and does not subcontract.
G.s.e.'s capability portfolio centers on heavy civil construction and industrial water systems. Representative recent work includes a $109.5 million firm fixed price definitive contract awarded by the National Park Service on May 28, 2026, to design and construct the Grant Wastewater Treatment Plant and collections infrastructure at Yellowstone National Park in Mammoth, Wyoming, spanning 975 calendar days with completion targeted for February 28, 2029, under NAICS 237110 (Water and Sewer Line and Related Structures Construction). The vendor also holds a $9.7 million Army Corps of Engineers contract (awarded July 18, 2025) for wastewater treatment plant inspection, design, and repair at Defense Distribution Depot San Joaquin in Tracy, California, including coatings remediation, electrical and control-system upgrades, valve and pipe replacement, and clarifier and pump replacements, with completion due February 3, 2027. A $3.8 million Bureau of Reclamation contract from January 18, 2022, covers design, fabrication, storage, delivery, installation, testing, and commissioning of solids clarifier equipment for the Leadville Mine Drainage Tunnel Project, classified under NAICS 333318 (metal tank manufacturing) with completion through May 28, 2027. Most recently, on October 1, 2026, the vendor received a $1.8 million purchase order from the International Boundary and Water Commission U.S.-Mexico for headworks repair work in Rio Rico, Arizona, scheduled for completion September 30, 2027.
Customer concentration is heavily skewed toward a single large award. The National Park Service accounts for $109.5 million (88%) of the combined $124.8 million potential value across all awards, with the Army Corps of Engineers Sacramento District contributing $9.7 million (8%). The top five customer agencies by award count are the Department of the Navy (31 awards), the Bureau of Reclamation (15 awards, $3.8 million), the Department of Energy (12 awards), and the Departments of the Army and Air Force (9 awards each); however, dollar volume does not track award frequency — the Navy and Energy awards carry substantially lower individual values than water infrastructure projects. Three awards (combined potential value $15.3 million) face ultimate completion within the next twenty-four months and are therefore exposed to recompete.
The Service Contract Inventory dataset shows minimal federally reportable service-contract activity: two SCI records as a named subcontractor (not as prime) across FY2024–FY2025, representing roughly 16–17 FTEs in a subordinate role, indicating that G.s.e.'s federal footprint is dominated by construction and equipment manufacturing awards (which fall outside SCI's reporting scope) rather than labor-hour service delivery.
Quick answers
Is G.s.e. Construction Company, Inc. registered in SAM.gov?
Yes. G.s.e. Construction Company, Inc.'s SAM.gov registration is active through June 11, 2027.
What is G.s.e. Construction Company, Inc.'s CAGE code?
G.s.e. Construction Company, Inc.'s CAGE code is 0CW03, and its Unique Entity ID (UEI) is JS4MLNK3AFR9.
How much has G.s.e. Construction Company, Inc. received in federal contracts?
Federal contracts obligated $9,741,900 to G.s.e. Construction Company, Inc. in fiscal year 2025 and $121,008,500 in fiscal years 2023 through 2027.
How does G.s.e. Construction Company, Inc. rank among federal contractors?
G.s.e. Construction Company, Inc. ranked #2 in PSC Z2ND, #25 in NAICS 23711 and #55 in NAICS 2371 in FY2025.
What is G.s.e. Construction Company, Inc.'s most recent federal award?
G.s.e. Construction Company, Inc.'s most recent federal contract award is Headworks repair (191BWC26P0090), from International Boundary and Water Commission U.S.-Mexico, on October 1, 2026.
On GovTribe
See G.s.e. Construction Company, Inc.'s full federal record
- Federal contract awards
- IDV awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors