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

Self-certified in SAM.gov
  • For Profit Organization
  • Limited Liability Company
  • Veteran Owned Business
  • Service Disabled Veteran Owned Business
Entity structure
Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov
Show all
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 .

Recent federal awards

GCS LLC's 5 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award Agency Obligated Awarded
Provide road maintenance activities per drawings and specifications to potter basin road (nfsr 525). Contract · 1240LP26F0025 Forest Service $76,858
This project will result in the removal of an existing culvert, and installation of a new aquatic organism passage… Contract · 1240LT26F0006 Forest Service $272,500
Replacement of west muddy creek bridges #4 and #5 per drawings and specifications. Grand mesa, uncompahgre and… Contract · 1240LT26C0003 Forest Service $2,402,090
Reconstruction of roads within the SAN juan williams creek road and spur reconstruction Contract · 1240LT25C0019 Forest Service $246,620
Guarantee minimum Contract · 1240LQ25F0015 Forest Service $500

About GCS LLC

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.

Contract vehicles

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

What is GCS LLC's UEI?

GCS LLC's Unique Entity ID (UEI) in SAM.gov is JJXLTLEU5UN5.

What is GCS LLC's CAGE code?

GCS LLC's CAGE code is 4ZJH2.

What is GCS LLC's primary NAICS code?

GCS LLC's primary NAICS code is 236210 (Industrial Building Construction).

Where is GCS LLC located?

GCS LLC's physical address in SAM.gov is 1360 US-6, Ottawa, IL 61350, USA.

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.

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

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  • Funding analysis by agency, NAICS and set-aside
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