GCS LLC
Ottawa, IL Doing business as Government Contracting Service LLC
- UEI
- JJXLTLEU5UN5
- CAGE
- 4ZJH2
- Primary NAICS
- 236210 Industrial Building Construction
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
-
- 115310 Support Activities for Forestry
- 236220 Commercial and Institutional Building Construction
- 237110 Water and Sewer Line and Related Structures Construction
- 237120 Oil and Gas Pipeline and Related Structures Construction
- 237130 Power and Communication Line and Related Structures Construction
- 237310 Highway, Street, and Bridge Construction
- 237990 Other Heavy and Civil Engineering Construction
- 238110 Poured Concrete Foundation and Structure Contractors
Show all 29
- 238130 Framing Contractors
- 238140 Masonry Contractors
- 238150 Glass and Glazing Contractors
- 238160 Roofing Contractors
- 238170 Siding Contractors
- 238190 Other Foundation, Structure, and Building Exterior Contractors
- 238210 Electrical Contractors and Other Wiring Installation Contractors
- 238220 Plumbing, Heating, and Air-Conditioning Contractors
- 238290 Other Building Equipment Contractors
- 238310 Drywall and Insulation Contractors
- 238320 Painting and Wall Covering Contractors
- 238330 Flooring Contractors
- 238340 Tile and Terrazzo Contractors
- 238350 Finish Carpentry Contractors
- 238390 Other Building Finishing Contractors
- 238910 Site Preparation Contractors
- 238990 All Other Specialty Trade Contractors
- 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
- 541519 Other Computer Related Services
- 561730 Landscaping Services
- 562910 Remediation Services
- SAM.gov registration date
- Physical address
- 1360 US-6, Ottawa, IL 61350, USA
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 | $2,759,848 |
| FY2025 | $3,509,595 |
| FY2024 | $1,450 |
| FY2023 | $48,038 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Agriculture | $2,759,848 |
Contract vehicles
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| RJS Construction, Inc. | 140F0122C0074 | $300,750 | |
| RJS Construction, Inc. | 140P1222F0016 | $213,055 | |
| RJS Construction, Inc. | 140F0122F0013 | $717,400 |
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About the company
GCS LLC, doing business as Government Contracting Service LLC, is a Service-Disabled Veteran-Owned Small Business (SDVOSB) based in Ottawa, Illinois, that delivers federal infrastructure and construction services as a prime contractor (98% of recent awards) under total small business set-asides, with recent work concentrated on road, bridge, and campground infrastructure projects for the U.S. Forest Service and the Department of the Interior.
GCS LLC holds SBA certification as both a Veteran-Owned Small Business and an SDVOSB through May 30, 2027. The vendor's award portfolio spans 159 prime and sub awards with combined potential value of $99 million, of which $26.4 million has been obligated. The top NAICS codes are Commercial and Institutional Building Construction (34 awards), Highway, Street, and Bridge Construction (25 awards), and Other Heavy and Civil Engineering Construction (19 awards), with primary PSC activity in forest and range improvements, highway and road construction, and repair or alteration of transportation infrastructure.
Customer concentration sits heavily with the Department of Agriculture Forest Service Rocky Mountain Region (38 awards, $84 million combined potential value), which accounts for approximately 85% of the vendor's potential dollar value across its entire portfolio. The Department of Veterans Affairs Veterans Health Administration Veterans Integrated Service Network 19 represents the second-largest customer by award count (46 awards, $6.6 million combined potential value), though at substantially lower per-award magnitude. The Department of the Interior Bureau of Land Management Colorado Region places a distant third (13 awards, $3 million combined potential value). These three customers represent 67% of recent award count and 96% of combined potential value.
GCS LLC holds or has held four active indefinite delivery contracts with the Forest Service Region 2: a $50 million multiple-award IDC for road and bridge construction across Colorado, Nebraska, South Dakota, Kansas, and Wyoming (awarded July 2025, performing through July 2030); a $20 million single-award IDC for road maintenance and forest support services in the same five-state region (awarded July 2025, performing through June 2030); a $5 million White River National Forest road and bridge IDIQ (awarded August 2021, expiring August 2026); and a now-expired single-award IDC with a $2.5 million reported ceiling (awarded August 2021). Representative prime work includes a $2.948 million firm fixed-price contract for Little Bear Campground reconstruction near Delta, Colorado (awarded December 2024, due September 2026), a $2.402 million contract for West Muddy Creek Bridges #4 and #5 replacement in the Grand Mesa, Uncompahgre, and Gunnison National Forests (awarded January 2026, due January 2027), a $643 thousand delivery order for difficult campground asphalt paving in the White River National Forest under the Great American Outdoors Act (awarded June 2022, completed November 2022), and a $314 thousand BLM contract for Two Bridges Expansion RV campground infrastructure near Silt, Colorado (awarded July 2025, due July 2026). The vendor also subcontracts on construction work to RJS Construction, Inc., providing concrete work and pond-liner removal on federal projects.
Activity has been uneven in recent years: 12 awards in 2022, declining to 1 in 2023 and 1 in 2024, then recovering to 5 in 2025 and 3 in 2026 (through early July). Five awards with ultimate completion dates in the next twenty-four months carry combined potential value of $6 million and face recompete. The Service Contract Inventory dataset reports minimal federal service-contract activity above the $150,000 threshold — $0 invoiced revenue across prime records in FY2022–FY2024, with 0.3 FTEs in FY2022, 0.0 in FY2023, and 2.5 in FY2024 — indicating that GCS LLC's federal work is predominantly goods and construction rather than labor-hour service contracts subject to SCI reporting.
SBA capabilities narrative
A CVE certified SDVOSB, design/build, heavy/civil engineering, CM/GC. Clients are VA Medical Center, Bureau of Rec and SM Stoller Corp. Authorized Varco Pruden steel building distributor, supplier and builder.
Quick answers
Is GCS LLC registered in SAM.gov?
Yes. GCS LLC's SAM.gov registration is active through September 23, 2027.
Which contract vehicles does GCS LLC hold?
GCS LLC holds a place on 1 federal contract vehicle: Forest Service Rocky Mountain Region 2 Road And Bridge Construction Services.
How much has GCS LLC received in federal contracts?
Federal contracts obligated $3,509,595 to GCS LLC in fiscal year 2025 and $6,318,931 in fiscal years 2023 through 2027.
How does GCS LLC rank among federal contractors?
GCS LLC ranked #35 in PSC Z2LB and #65 in PSC Z2EB in FY2025.
What is GCS LLC's most recent federal award?
GCS LLC's most recent federal contract award is Provide road maintenance activities per drawings and specifications to potter basin road (nfsr 525) (1240LP26F0025), from Forest Service, on July 6, 2026.
On GovTribe
See GCS LLC's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors