Depending on my lookup, the overall HDB hotline is 1800-225-5432 . It's really a Branch Place of work Assistance Line that operates on weekdays from eight:00 AM to five:00 PM.Additionally, you'll find other Get hold of quantities for precise products and services:* HDB Main Line: 6490-1111 (for common enquiries, weekdays 8:30 AM - five:00 PM)*