HDB's focused hotline for **carpark enforcement** is **1800-338-6622**. This is the 24-hour hotline principally for reporting illegal parking in HDB carparks and service streets. It's also possible to report illegal parking through the OneService Application. For standard enquiries about period parking, you may Speak to the key HDB Branch Assistance Line at **1800-225-5432**, which operates for the duration of normal office hrs. This amount handles questions on year parking programs, renewals, and other similar administrative matters. It's important to implement the correct selection in your distinct problem to hdb carpark hotline 880 31 be certain a more rapidly response.