HDB's committed hotline for **carpark enforcement** is **1800-338-6622**. This can be a 24-hour hotline primarily for reporting unlawful parking in HDB carparks and service roads. You can also report unlawful parking throughout the OneService App. For typical enquiries about year parking, it is possible to Make contact with the main hdb carpark hotline 880 31 HDB Department Support Line at **1800-225-5432**, which operates in the course of regular Office environment hrs. This number handles questions on period parking purposes, renewals, together with other connected administrative matters. It is important to make use of the proper amount for your precise concern to ensure a speedier response.