HI HAYHAI ,I HAVE JUS COMPLETE MY HDB HOUSE AND MOVE IN 2 WEEK ,MY THIS CONTRACTOR IS VERY RESPONSIBLE ,TRUSTWORTHY AND EXPERIENCE ($$ REASONABLE) . HE HAVE HIS OWN WORKER .TILER .PLUMBER AND HACKER ETC . HIS COMPANY IS REG UNDER HDB ( HDB LIC CONTRACTOR) IF YOU NEED THE CONTACT I CAN PM YOU . GOOD WISH.