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 roads. You can also report unlawful parking throughout the OneService App. For general enquiries about year parking, it is more info possible to Make contact with the main HDB Department Support Line at **1800-225-5432**, which operates throughout regular Office environment hours. This selection handles questions on season parking purposes, renewals, and also other associated administrative issues. It is important to use the right quantity for your personal distinct problem to be certain a more quickly reaction.