Determined by my lookup, the overall HDB hotline is 1800-225-5432 . It is just a Department Business Service Line that operates on weekdays from 8:00 AM to 5:00 PM. Additionally, you will find other Make contact with figures for certain companies: * HDB Major Line: 6490-1111 (for standard enquiries, weekdays https://hdbtowncouncilhotline210232210.post-blogs.com/57868341/hdb-town-council-hotline-210-22