Julie finds and successfully exploits the loophole
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Because Julie filmed her attempt after Eva, the doorbell was somewhat loosely attached to the doorframe, and kept falling off when Julie rang it. However, it took her multiple trips back and forth before she realised she could just bring it back inside the house with her, instead reattaching it several times. She creates a three-level structure by just balancing the beer mats against one another. Lasse awards her second place for her house.
(Written by Karl Craven)