HDB's focused hotline for **carpark enforcement** is **1800-338-6622**. This is the 24-hour hotline principally for reporting unlawful parking in HDB carparks and service roads. You may also report illegal parking in the OneService Application. For standard enquiries about period parking, it is possible to Make contact with the key HDB Branch Assistance Line at **1800-225-5432**, which operates through standard Place of work hours. This range handles questions about season parking here purposes, renewals, together with other relevant administrative matters. It is vital to work with the correct selection in your certain problem to be certain a speedier response.