 The hospital serves the districts of Gombak, Petaling and Kuala Selangor with a combined population of more than 2.80 million.HSB is developed in 1999 and has been initiated to meet the needs of the growing population and also to reduce the influx of patients at Hospital Kuala Lumpur.The hospital was built by contractor, Tunas Selatan Sdn Bhd and costs RM 1.3 billion.