HDB fire-rated doors are mandatory for flats where the main entrance is located within three meters of a lift lobby or staircase, or if the original flat was already equipped with one. These doors, which must have a minimum fire resistance of 30 minutes, are designed to contain fire and smoke, providing a crucial window for escape. They must also have an SCDF certification label and a self-closing mechanism. Homeowners must engage an HDB-licensed contractor to ensure proper installation and to obtain the necessary permits. The price of these doors varies, with suppliers like Ho Ho and Laminatedoor offering options starting from S$800, and prices for custom laminate designs often ranging from S$1,188 to S$1,588, with some promotions bringing the cost down. The price typically includes the door, hardware, and click here installation with a valid fire-rated certificate.