Based upon my research, the overall HDB hotline is 1800-225-5432 . It's really a Department Business Services Line that operates on weekdays from 8:00 AM to five:00 PM. Additionally, you will find other Make contact with figures for certain companies: * HDB Major Line: 6490-1111 (for standard enquiries, weekdays 8:30 https://hdbtowncouncilhotline210200099.fitnell.com/77949268/hdb-town-council-hotline-210-22