Tiong Seng Holdings Ltd. engages in building construction, civil engineering, and property development. It operates through the following segments: Construction, Property Development, Rental, and Others. The Construction segment relates to acting as main contractors in construction and civil engineering projects and provision of construction and civil engineering services to property developers and government in both private and public sectors. The Property Development segment includes development and sales of properties. The Rental segment comprises investment properties and plant and machinery. The Others segment refers to the general corporate activities. The company was founded by Ah Tuan Pek, Seng Koon Pay, Tuan Chay Lee, and Kwi Cher Khng in 1959 and is headquartered in Singapore.