Sambu Construction, founded in 1948 as the holder of Korea's first civil-and-building construction license, grew through major infrastructure projects such as the Gyeongin and Gyeongbu expressways and the Seoul subway system.
Its business mix is dominated by domestic construction revenue, followed by a steel segment handling fabrication and installation of steel structures, an overseas segment, and other operations including land sales and service income.
Key subsidiaries include Sambu Renaissance, Sambu Renaissance The Hill, and SI Naepo Industrial Complex Development.
The company's scope covers civil works such as roads, subways, railways, power plants, dams, ports, water and sewage facilities, and bridges, as well as building construction including public facilities, apartments, and office buildings.
It has also pursued R&D in integrated waterproof paving materials and load-distributing precompression micropiles to strengthen its construction technology capabilities.
However, following a project-financing default tied to the Heonin-maeul development in 2011, the company first entered court rehabilitation in 2015; accumulated operating losses from 2020 led to complete capital impairment by 2024 and a second rehabilitation filing in February 2025, making balance-sheet restructuring, rather than core-business stability, the dominant issue in recent years.
Since 2026, following plan approval and a rights offering that brought in a new controlling shareholder, the company has been attempting a transition toward operational normalization.