Depending on my search, the general HDB hotline is 1800-225-5432 . It's a Branch Business office Assistance Line that operates on weekdays from eight:00 AM to five:00 PM. Also, there are actually other contact numbers for specific solutions: * HDB Primary Line: 6490-1111 (for common enquiries, weekdays 8:thirty AM - https://how-to-do-hdb-nomination91100.frewwebs.com/37620867/hdb-town-council-hotline-210-22