Based upon my lookup, the overall HDB hotline is 1800-225-5432 . This is a Branch Office environment Assistance Line that operates on weekdays from eight:00 AM to five:00 PM. Also, there are actually other Call quantities for unique products and services: * HDB Main Line: 6490-1111 (for general enquiries, weekdays https://hdbtowncouncilhotline210209988.is-blog.com/43852416/hdb-town-council-hotline-210-22