Christina Haack lent her renovation expertise to the cast of HGTV's Bachelor Mansion Takeover - without being too harsh in her critiques. "I didn't know what to expect," Haack, 42, exclusively told Us Weekly at HGTV's Bachelor Mansion Makeover event on Thursday, March 12, reflecting on her time as a guest judge on the show. "Pulling up, I noticed the house needed a little bit of TLC on the outside, and then going to the inside, I found I was getting to do the Rose Room, which is definitely the most iconic room, so I was super excited.