HDB's dedicated hotline for **carpark enforcement** is **1800-338-6622**. This is the 24-hour hotline mainly for reporting illegal parking in HDB carparks and repair roadways. It's also possible to report unlawful parking through the OneService App. For normal enquiries about time parking, you are able to Make contact with the leading HDB Department Company Line at **1800-225-5432**, which operates during regular Workplace hours. website This number handles questions about season parking applications, renewals, and also other linked administrative issues. It is vital to employ the proper selection for your specific problem to make sure a quicker response.