Sangji Construction, Inc. engages in the construction, electrical, and architectural work businesses in South Korea. The company offers total real estate development services comprising real estate development planning, profitability analysis, construction work, and interior design; property development services for villas, commercial buildings, and officetel properties; and co-development of property owner services. It also provides project management services consisting of planning/surveying, concept and tapping, feasibility study, marketing concept, project financing consulting, design review, contract and cost management, schedule management, quality management and construction supervision, and project completion management. In addition, the company offers luxury housing development and construction services for villas, detached housings, and townhouses, as well as office and commercial buildings; electricity system products comprising lights, power works, power line set-ups, electrical panels, and lighting protection systems; communication system products, such as CCTVs, CATVs, emergency bells, parking control systems, and structured wiring systems; and fire-fighting system products, including automatic alarm systems, leading lights, emergency broadcasting systems, and wireless communication systems. It offers its properties under the RITZVIL, CAELUM, and CAELUS brands. The company was formerly known as Sangji Caelum, Inc. and changed its name to Sangji Construction, Inc. in March 2024. Sangji Construction, Inc. was founded in 1979 and is headquartered in Seoul, South Korea.