HDB's dedicated hotline for **carpark enforcement** is **1800-338-6622**. That is a 24-hour hotline largely for reporting illegal parking in HDB carparks and service roadways. You can also report unlawful parking from the OneService App. For common enquiries about season parking, you can Call the leading HDB Branch Services Line at **1800-225-5432**, which operates throughout frequent Office environment hrs. This website quantity handles questions on year parking programs, renewals, as well as other similar administrative issues. It's important to use the right amount for your precise situation to make sure a a lot quicker reaction.