Based upon my research, the final HDB hotline is 1800-225-5432 . It's really a Department Workplace Provider Line that operates on weekdays from eight:00 AM to 5:00 PM.Also, there are actually other contact numbers for specific solutions:* HDB Primary Line: 6490-1111 (for basic enquiries, weekdays 8:thirty AM - five:00 PM)* Critical Routine mai