Dependant on my look for, the general HDB hotline is 1800-225-5432 . This is a Department Business Service Line that operates on weekdays from 8:00 AM to 5:00 PM.Furthermore, you will discover other contact numbers for specific solutions:* HDB Principal Line: 6490-1111 (for basic enquiries, weekdays 8:30 AM - 5:00 PM)* Important Mai… Read More