Osung Engineering
Pyeongtaek, Gyeonggi-do
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Sole Proprietorship
- Other NAICS codes in SAM.gov
-
- 238210 Electrical Contractors and Other Wiring Installation Contractors
- 238290 Other Building Equipment Contractors
- 238910 Site Preparation Contractors
- 326191 Plastics Plumbing Fixture Manufacturing
- 541513 Computer Facilities Management Services
- 561210 Facilities Support Services
- 561720 Janitorial Services
- 561730 Landscaping Services
- SAM.gov registration date
- Physical address
- 60 Bokchang-ro, Pyeongtaek, Gyeonggi-do, South Korea
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 | $899,208 |
| FY2025 | $621,747 |
| FY2024 | $723,132 |
| FY2023 | $126,559 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $511,051 | |
| 2 | Department of State | $388,156 |
Contract awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Replacement of two geothermal HVAC units | US Embassy Seoul (DOS) | $40,958 | |
| HVAC unit replacement at YEH (FY-26) | US Embassy Seoul (DOS) | $202,603 | |
| Geothermal HVAC pmsc, emergency repair service | US Embassy Seoul (DOS) | $102,622 | |
| Pmsc for HVAC systems, annex rooftop units | US Embassy Seoul (DOS) | $23,708 | |
| FAC: (TRANE) havc repair parts for YEH | US Embassy Seoul (DOS) | $8,600 |
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| J & J Maintenance Inc. | W912DY25F0055 | $102,222 | |
| J & J Maintenance Inc. | W912DY25F0055 | $129,768 |
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About the company
Osung Engineering, a for-profit South Korean sole proprietorship based in Pyeongtaek, delivers HVAC and refrigeration maintenance, preventive maintenance, and repair services to U.S. federal facilities in South Korea and the Western Pacific region as a prime contractor (85% of recent awards) and subcontractor, competing under full-and-open conditions with no set-aside designations.
The company's customer base is concentrated and geographically specialized. The Department of State's Bureau of Overseas Building Operations accounts for 10 awards totaling $765 thousand in combined potential value, anchoring Osung's visible portfolio through recurring purchase orders for geothermal HVAC maintenance at U.S. Embassy compounds and diplomatic facilities in Seoul, including the Yongsan Embassy Housing complex, the Chancery Maintenance Residence, the U.S. Embassy Annex, and JUSMAG-K. However, dollar concentration lies with the Defense Commissary Agency (operating under the Army Corps of Engineers Engineering District Far East), which awarded a $4.2 million definitive contract in February 2024 running through August 2029 for comprehensive HVAC and refrigeration maintenance services at U.S. military facilities in South Korea. Recent representative prime awards include a $202.6 thousand purchase order from State (August 2026) for HVAC unit replacement at Yongsan Embassy Housing, a $106.9 thousand order (March 2025) for maintenance of geothermal HVAC systems at the Chancery Maintenance Residence and Yongsan Engineering Housing, and a $102.6 thousand purchase order (April 2026) for geothermal HVAC preventive maintenance and emergency repair services. All State Department work is priced firm fixed-price with no set-aside; performance is conducted in South Korea.
Activity has grown from two awards in 2023 to four in 2026, with $5 million in combined potential value across thirteen awards. Two subcontracts placed through J & J Maintenance Inc. in late 2025 carry O&M services designations. Four awards with combined potential value of $378 thousand reach ultimate completion within the next twenty-four months, exposing Osung to recompete risk on its Embassy and military facility maintenance portfolio. Osung operates as a single-source specialist for HVAC and refrigeration systems at a concentrated set of U.S. government installations in the Western Pacific, with established local operational proximity and sustained performance history; the company's federal footprint reflects regional facility-support specialization rather than government-wide contract vehicle positioning.
Quick answers
Is Osung Engineering registered in SAM.gov?
Yes. Osung Engineering's SAM.gov registration is active through June 24, 2027.
What is Osung Engineering's CAGE code?
Osung Engineering's CAGE code is 643KF, and its Unique Entity ID (UEI) is DWM3WAA3LG11.
How much has Osung Engineering received in federal contracts?
Federal contracts obligated $621,747 to Osung Engineering in fiscal year 2025 and $2,370,646 in fiscal years 2023 through 2027.
How does Osung Engineering rank among federal contractors?
Osung Engineering ranked #45 in PSC Z1FA in FY2025.
What is Osung Engineering's most recent federal award?
Osung Engineering's most recent federal contract award is Replacement of two geothermal HVAC units (19KS7026P0863), from US Embassy Seoul (DOS), on September 16, 2026.
On GovTribe
See Osung Engineering's full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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