Determined by my lookup, the general HDB hotline is 1800-225-5432 . It's a Department Business Company Line that operates on weekdays from 8:00 AM to five:00 PM.On top of that, you will discover other Get hold of numbers for specific expert services:* HDB Principal Line: 6490-1111 (for general enquiries, weekdays 8:thirty AM - 5:00 PM)* Vital M