Yibon Construction Co., LTD.

Yibon Construction Co., LTD., a South Korean for-profit construction firm headquartered in Seoul, delivers general construction, repair, facility modernization, and airfield pavement services to the U.S. Department of Defense and subordinate military commands as a prime contractor operating exclusively in South Korea. The vendor competes full-and-open (no set-asides) and holds a portfolio of 461 prime federal awards valued at $29.61 billion combined potential value, with all work performed on firm fixed-price delivery orders and task orders under Status of Forces Agreement (SOFA) acquisition vehicles.

Yibon's customer concentration is heavily skewed toward the U.S. Army Installation Management Command Pacific Region and the U.S. Army Corps of Engineers Engineering District Far East, which together account for the dollar majority of its portfolio. The Army Installation Management Command Pacific Region issued 179 awards ($2.18 billion combined potential value) across facility repairs, infrastructure upgrades, and general construction maintenance at U.S. Forces Korea installations; the Army Corps of Engineers Far East District issued 55 awards ($26.76 billion combined potential value), anchored by two large design-build and airfield paving indefinite delivery contracts. The Air Force Pacific Air Forces issued 50 awards ($31.2 million), primarily for airfield pavement repair at Osan Air Base and Kunsan Air Base. The Army Installation Management Command Korean Region issued 49 awards ($611.1 million). The Marine Corps issued 5 awards ($15.8 million) for barricade and pavement repair work. These five agencies account for 100% of recent combined potential value.

Yibon holds six active indefinite delivery contracts with combined ceiling values exceeding $1.16 billion. The cornerstone vehicle is a $400 million multiple-award design-build task order contract (MATOC) with the Army Corps of Engineers Far East District (awarded June 21, 2024, through December 20, 2029), under which diverse construction and repair task orders for U.S. military facilities throughout South Korea are issued by Pacific Air Forces, Army IMCOM, Army Cyber Command, and the Marine Corps. Four separate $245 million multiple-award IDIQs with Army Installation Management Command Pacific Region and Korean Region (awarded October 5, 2023, through October 4, 2028) for general construction repair and upgrade of U.S. Forces Korea facilities under the Operations and Maintenance Account furnish the bulk of task order volume; Yibon has executed 92, 82, 70, 39, and 32 task orders respectively across multiple award vehicles (W91QVN04D0057, DABP0103D0045, and other designated IDIQs). A fifth vehicle is a $25 million single-award job order contract with the Army Corps of Engineers Far East District (awarded June 22, 2023, through June 21, 2026) dedicated to Fiscal Year 2023–2026 airfield paving projects. A sixth vehicle is a $45 million multiple-award design-build MATOC with the Army Corps of Engineers (awarded September 28, 2023, through September 27, 2025).

Representative delivery orders and their scope illustrate Yibon's concrete capability footprint. A $3.61 million firm fixed-price delivery order from the Defense Health Agency (awarded September 25, 2025, completion April 25, 2028) covers replacement of medical gas components at Osan Air Base. A $2.27 million Pacific Air Forces delivery order (awarded October 6, 2025, completion November 30, 2026) procures repair of fuel tanks and certified inspection services at Osan Air Base. A $4.5 million Marine Corps delivery order (awarded August 16, 2024, completion May 13, 2025) covers typhoon damage repairs and slope stabilization at Camp Mujuk. A $1.47 million Air Force delivery order (awarded May 7, 2025, completion September 12, 2026) provides Phase 3 airfield pavement repair at Osan Air Base. A $1.42 million Air Force delivery order (awarded October 20, 2025, completion October 14, 2026) covers pavement repair at Kunsan Air Base. A $1.5 million Army Corps of Engineers delivery order (awarded September 25, 2024, completion March 13, 2026) repairs the fuel system maintenance dock at Osan Air Base. A $1.07 million Army IMCOM delivery order (awarded March 14, 2023, completion July 17, 2023) covered deteriorated building repair. Additional task orders encompass lightning protection system installation, HVAC system replacement, facility painting, roof repair, sewer line replacement, parking lot repair, and building demolition across Camp Casey, Camp Humphreys, Camp Walker, Camp Bonifas, Suwon Air Base, Kwangju Air Base, and forward operating sites throughout the Korean peninsula.

Activity has been volatile. Yibon issued 35 awards in 2023, dropped to 9 in 2024, rebounded to 8 in 2025, and reached 3 through June 2026 (year-to-date). Obligated dollars total $136.9 million, representing 0.46% of combined potential value — a characteristic of IDIQ and MATOC vehicles where task orders are issued over multi-year performance periods and dollars are obligated in tranches. Six awards carrying $12 million in combined potential value reach ultimate completion within the next twenty-four months and therefore face recompete risk. The vendor's NAICS footprint is dominated by Commercial and Institutional Building Construction (232 awards) and Highway, Street, and Bridge Construction (89 awards); PSC codes center on construction of and repair to office buildings, highway and airfield facilities, and administrative buildings.

Yibon maintains no subcontract footprint in the source data; all 461 awards are prime awards. The vendor was registered in the System for Award Management as early as June 10, 2004, and holds no federal set-aside certifications (8(a), HUBZone, SDVOSB, WOSB, etc.), competing entirely in full-and-open procurements. All work is performed in South Korea under bilateral SOFA frameworks governing U.S. military operations on the peninsula, with no domestic operations recorded in the award history.