HDB's devoted hotline for **carpark enforcement** is **1800-338-6622**. This is a 24-hour hotline generally for reporting unlawful parking in HDB carparks and service roadways. You may as well report illegal parking through the OneService Application. For standard enquiries about season parking, you can Get hold of the key HDB Branch Assistance Line at **1800-225-5432**, which operates for the duration of normal Business hrs. This number handles questions on period parking purposes, renewals, together with other connected administrative more info issues. It is important to use the right number in your certain concern to be certain a more rapidly response.