Active
Veteran Owned BusinessService Disabled Veteran Owned BusinessSmall Business
Overview
- Legal name
- GCS LLC
- Registered location
- LOMA, CO, USA
- Website
- Company website ↗
- Primary NAICS
- 236210 — Industrial Building Construction
- Latest award activity
- Sep 11, 2026
Read company summary
GCS LLC is associated with UEI JJXLTLEU5UN5 and CAGE 4ZJH2 in public federal records. AcornBids currently links 11 prime awards totaling $7.4M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Agriculture. Its recorded federal awards include work classified as Highway, Street, and Bridge Construction; Other Heavy and Civil Engineering Construction; Commercial and Institutional Building Construction. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 236210 (Industrial Building Construction). Its public SAM.gov registration lists LOMA, CO, USA.
At a glance
Lifetime prime obligations$7.4M
Prime awards11
Awards with future end dates4
Top-agency concentration80.9%
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- GCS LLC
- UEI
- JJXLTLEU5UN5
- CAGE
- 4ZJH2
- Registered address
- 1360 HIGHWAY 6 AND 50, LOMA, CO, 81524, USA
- Registration status
- Active
- Primary NAICS
- 236210 — Industrial Building Construction
- SAM activation
- Oct 14, 2025
- Initial registration
- Feb 7, 2008
- Entity start
- Jan 1, 2008
- SAM updated
- Oct 14, 2025
- Registration expires
- Oct 10, 2026
- Fiscal year end
- Dec 31
- Place of incorporation
- CO, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 1282B125C0008CONSTRUCTION GAOA LITTLE BEAR CG RECONSTRUCTION | Department of Agriculture | $3.0M | Dec 2, 2024 | Nov 30, 2026 |
| 1240LT25D0040USFS REGION 2 ROAD AND BRIDGE CONSTRUCTION MATOC | Department of Agriculture | $50.0M | Jul 14, 2025 | Not available |
| 1240LT26C0003REPLACEMENT OF WEST MUDDY CREEK BRIDGES #4 AND #5 PER DRAWINGS AND SPECIFICATIONS. GRAND MESA, UNCOMPAHGRE AND GUNNISON NF | Department of Agriculture | $2.4M | Jan 30, 2026 | Jan 30, 2027 |
| 1240LP26F0025PROVIDE ROAD MAINTENANCE ACTIVITIES PER DRAWINGS AND SPECIFICATIONS TO POTTER BASIN ROAD (NFSR 525). | Department of Agriculture | $76.9K | Jul 6, 2026 | Aug 14, 2026 |
| 6982AF26P000014CO NP COLM 10(5) GUARDRAIL IMPROVEMENT | Department of Transportation | $207.0K | May 28, 2026 | Aug 11, 2026 |
| 140L1725C0004BLM-CO CRVFO TWO BRIDGE EXPANSION | Department of the Interior | $314.1K | Jul 17, 2025 | Apr 24, 2026 |
| 1240LT26F0006THIS PROJECT WILL RESULT IN THE REMOVAL OF AN EXISTING CULVERT, AND INSTALLATION OF A NEW AQUATIC ORGANISM PASSAGE ALUMINUM PLATE STRUCTURE, WHICH WILL SIT ON CONCRETE FOOTINGS | Department of Agriculture | $272.5K | Mar 31, 2026 | Nov 30, 2026 |
| 1240LQ25D0010REGION 2 ROAD MAINTENANCE AND OTHER FOREST MAINTENANCE/SUPPORT SERVICES | Department of Agriculture | $20.0M | Jul 1, 2025 | Not available |
| 1240LT25C0019RECONSTRUCTION OF ROADS WITHIN THE SAN JUAN WILLIAMS CREEK ROAD AND SPUR RECONSTRUCTION | Department of Agriculture | $246.6K | Oct 6, 2025 | Apr 24, 2026 |
| 1240LQ25F0015GUARANTEE MINIMUM | Department of Agriculture | $500 | Sep 5, 2025 | Jun 30, 2030 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Oct 14, 2025 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Feb 7, 2008 |
| Entity start | Jan 1, 2008 |
Registration classifications: Veteran Owned Business, Service Disabled Veteran Owned Business, Small Business. These are separate from the reported certificates above.
| Industry | Reported size status |
|---|---|
| 115310 — Support Activities for Forestry | Not reported |
| 236210 — Industrial Building Construction | Not reported |
| 236220 — Commercial and Institutional Building Construction | Not reported |
| 237110 — Water and Sewer Line and Related Structures Construction | Not reported |
| 237120 — Oil and Gas Pipeline and Related Structures Construction | Not reported |
| 237130 — Power and Communication Line and Related Structures Construction | Not reported |
| 237310 — Highway, Street, and Bridge Construction | Not reported |
| 237990 — Other Heavy and Civil Engineering Construction | Not reported |
| 238110 — Poured Concrete Foundation and Structure Contractors | Not reported |
| 238130 — Framing Contractors | Not reported |
| 238140 — Masonry Contractors | Not reported |
| 238150 — Glass and Glazing Contractors | Not reported |
| 238160 — Roofing Contractors | Not reported |
| 238170 — Siding Contractors | Not reported |
| 238190 — Other Foundation, Structure, and Building Exterior Contractors | Not reported |
| 238210 — Electrical Contractors and Other Wiring Installation Contractors | Not reported |
| 238220 — Plumbing, Heating, and Air-Conditioning Contractors | Not reported |
| 238290 — Other Building Equipment Contractors | Not reported |
| 238310 — Drywall and Insulation Contractors | Not reported |
| 238320 — Painting and Wall Covering Contractors | Not reported |
| 238330 — Flooring Contractors | Not reported |
| 238340 — Tile and Terrazzo Contractors | Not reported |
| 238350 — Finish Carpentry Contractors | Not reported |
| 238390 — Other Building Finishing Contractors | Not reported |
| 238910 — Site Preparation Contractors | Not reported |
| 238990 — All Other Specialty Trade Contractors | Not reported |
| 334220 — Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | Not reported |
| 541519 — Other Computer Related Services | Not reported |
| 561730 — Landscaping Services | Not reported |
| 562910 — Remediation Services | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| MARK S MILLS | Government business | Contact method not published | SAM registration | Not available |
| CASEY A MILLS | Alternate government business | Contact method not published | SAM registration | Not available |
| MARK S MILLS | Electronic business | Contact method not published | SAM registration | Not available |
| CASEY A MILLS | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 115310 — Support Activities for Forestry
- 236210 — Industrial Building Construction
- 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
- 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
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
Related companies worth researching
Explore the customer, work and award-size evidence behind each match.
47 awards
25 awards
25 awards
20 awards
20 awards
19 awards
17 awards
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
Recently viewed companies
Keep your research moving
Save this company, track changes, and evaluate upcoming work against your targets.
Save to my research Find my fit