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The countdown to the premier of The Block's 13th season is on. This season, five rundown period houses have been rescued from demolition and transported to the Melbourne suburb of Elsternwick, to be transformed into luxury homes.

Last season’s winners, Will and Karlie, the show's sweethearts, took home $815,000 from the sale of their luxury apartment in an old Port Melbourne factory, and we're expecting this season to bigger and better.

But, as much as we love the room reveals, challenges, and auction days, it's the contestants (and their drama) that we're looking forward to most. Get to know this season's renovating couples: