HDB's focused hotline for **carpark enforcement** is **1800-338-6622**. That is a 24-hour hotline largely for reporting illegal parking in HDB carparks and repair streets. It's also possible to report illegal parking through the OneService Application. For normal enquiries about period parking, you'll be able to website Get in touch with the main HDB Department Support Line at **1800-225-5432**, which operates throughout regular Office environment hrs. This number handles questions on period parking purposes, renewals, and various relevant administrative matters. It is vital to utilize the correct range to your specific challenge to make certain a faster reaction.