PT Sumber Mas Konstruksi Tbk operates as a general contractor and interior designer company in Indonesia. The company engages in the construction of highways and tolls, office buildings, apartments, hospitality buildings, roads, bridges, shophouses, housing areas, hospitals, universities, and public facilities. It also provides building structure renovation services; air and seaport construction services; interior design services; development supervision works; and telecommunication construction services, including base transceiver station tower construction and network installation, network optimization drive test, and radio transmission installation services. The company was founded in 1981 and is based in Jakarta Selatan, Indonesia.