PT. PERENTJANA DJAJA is construction and consultancy service. The organization was established in 1962 Jakarta as an Architectural Consultant. Through its staffs, PT. Perentjana Djaja has worked in Architectural, Structural, Mechanical, Electrical, Landscape and Interior Design Services (Total Design Concept).

The organization a ISO 9001-2000 certified from UKAS Quality Management No. 2715 and KAN (National Accreditation Committee) certified No. 04/QM/090, as a commitment to quality management and their service.