HDB contact number is designed to assist with questions related to flats, applications, and estate matters. You can call the HDB Hotline at 1800-225-5432 (1800-CALL-HDB) during office hours on weekdays. Through the hotline, you can inquire about flat applications, resale procedures, loan eligibility, grants, and upgrading programmes. For estate-related matters https://hdbhotline124912109.oblogation.com/35597642/hdb-hotline-12-49