S-One Construction Co.,Ltd.
Wonju-si, Gangwon-do
- UEI
- MGN3EALSPNE7
- CAGE
- 413LF
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Tax Exempt)
- Other NAICS codes in SAM.gov
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- 236116 New Multifamily Housing Construction (except For-Sale Builders)
- 236117 New Housing For-Sale Builders
- 236118 Residential Remodelers
- 236210 Industrial Building Construction
- 237210 Land Subdivision
- 237310 Highway, Street, and Bridge Construction
- 237990 Other Heavy and Civil Engineering Construction
- 238110 Poured Concrete Foundation and Structure Contractors
Show all 26
- 238120 Structural Steel and Precast Concrete 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
- SAM.gov registration date
- Physical address
- 99 Daeaneunhaengjeong-gil, Heungeop-myeon, Wonju-si, Gangwon-do, South Korea
- Website
- s1const.co.kr
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Construction
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 | $636,975 |
| FY2025 | $787,061 |
| FY2024 | $678,558 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $636,975 |
Contract vehicles
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Seojin Construction Co.,Ltd | Gyeongsangnam-do | 236220 Commercial and Institutional Building Construction |
| Yuil Eng. & Const. Co.,Ltd | Seoul | 236220 Commercial and Institutional Building Construction |
| Dongjin Construction Co., LTD. | Chilgok-gun, Gyeongsangbuk-do | 236220 Commercial and Institutional Building Construction |
| Hanbaek Construction Co.,Ltd | Jeonju-si, Jeollabuk-do | 236220 Commercial and Institutional Building Construction |
| Youngjin Construction Inc. | Chilgok-gun, Gyeongsangbuk-do | 236210 Industrial Building Construction |
About the company
S-One Construction Co., Ltd., a for-profit South Korean construction firm based in Wonju-si, Gangwon-do, competes exclusively as a prime contractor on Department of the Army facility maintenance, repair, and construction delivery orders in South Korea, with no set-aside designations across its entire federal footprint.
S-One holds two active indefinite-delivery contracts awarded by the Army's Pacific Region and Korean Region commands. The larger vehicle — a $245 million multiple-award IDIQ for General Construction Repair and Upgrade of U.S. Forces Korea facilities, awarded October 5, 2023, performable through October 4, 2028 — anchors the vendor's footprint. A second $9.5 million single-award IDIQ for asphalt concrete pavement repair and upgrades at U.S. Army Garrison Daegu, awarded April 15, 2025, performable through April 14, 2030, provides specialized scope. Work across both vehicles is funded through Department of the Army Operation and Maintenance appropriations and covers building repairs, demolition, repainting, slope remediation, infrastructure maintenance, and general construction projects under $2 million at USFK installations. Representative task orders include a $779.1 thousand firm-fixed-price delivery order (February 2025) for repair of Building S-2557 at Yongsan with completion by January 29, 2026; a $426.5 thousand order (August 2026) to improve the November TA-A Maneuver Trail at Camp Casey, completing January 30, 2027; and a $232.1 thousand contract (August 2024) for repainting various buildings at Camp Casey.
The vendor's customer base is entirely concentrated within the Army. The Army's Installation Management Command Pacific Region accounts for eight awards carrying $744.5 million in combined potential value, while the Korean Region accounts for eight awards with $246.9 million combined potential value. The Army Pacific Command and Pacific Air Forces account for the remaining two awards. All work is performed in South Korea at installations including USAG Yongsan, Camp Casey, and USAG Daegu.
Recent activity peaked in 2024 with nine awards but has decelerated to three awards in 2025 and two in 2026. Combined potential value across all eighteen awards reaches $991.6 million, though only $2.1 million has been obligated to date, reflecting the structure of indefinite-delivery vehicles with multiple task orders issued as work requirements materialize. Two awards with ultimate completion dates within the next twenty-four months carry combined potential value of $640 thousand and face recompete exposure in that window. S-One operates without subcontractor engagement — 100% of awards are prime contracts and IDIQs.
Quick answers
Is S-One Construction Co.,Ltd. registered in SAM.gov?
Yes. S-One Construction Co.,Ltd.'s SAM.gov registration is active through February 11, 2027.
Which contract vehicles does S-One Construction Co.,Ltd. hold?
S-One Construction Co.,Ltd. holds a place on 2 federal contract vehicles, including GENERAL CONSTRUCTION REPAIR AND UPGRADE OF USFK FACILITIES and General Contruction by OMA.
How much has S-One Construction Co.,Ltd. received in federal contracts?
Federal contracts obligated $787,061 to S-One Construction Co.,Ltd. in fiscal year 2025 and $2,102,595 in fiscal years 2023 through 2027.
What is S-One Construction Co.,Ltd.'s most recent federal award?
S-One Construction Co.,Ltd.'s most recent federal contract award is The work to be performed is to demolish buildings no. S-4103, 4105, 4106, 4107 and 4110, at usag - yongsan (W90VN826FA080), from RCO Camp Humphreys 411th CSB, on September 1, 2026.
On GovTribe
See S-One Construction Co.,Ltd.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors