HDB's dedicated 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 can also report unlawful parking throughout the OneService App. For typical enquiries about year parking, you'll be able to Get in touch with the main HDB Department Support Line at **1800-225-5432**, which operates throughout frequent Business office hours. This selection handles questions about season parking apps, renewals, and also other associated administrative issues. click here It is important to use the right quantity for your personal distinct issue to guarantee a more quickly reaction.