At the half way point in the competition, the four couples assess where they think they are in the pack. Their next challenge is the smallest room in the house, the bathroom. Despite its size, they will have seventy-two hours to complete the work, although two couples will not have to do the demolition of their room as the winners of a plumbing related challenge, the losing two couples who are tasked with that work while the two winning couples spend that time being pampered at a day spa. Regardless, some of the winners don't feel their victory was all positive. The winners of the room challenge itself win a double prize of a Dyson vacuum and a trip to Las Vegas. While most of the couples stay true to their vision, Dom and Michael believe they have to move away from the color scheme they have used in most of the other rooms thus far based on comments by the judges, that color, gray, which they would have chosen again if it was purely up to them, while Kim and Harry attempt the virtually impossible by trying to make their bathroom bigger, or at least design the space so that it feels bigger. During the process, a medical issue derails one couple, who are down in manpower by half for much of the competition. Beyond that issue, each couple has a major issue with their completed room, two who end up breaking major glass items integral to their design, one who miscalculated the amount of tile required to complete the room as envisioned, and another needing to cut corners due to biting off more than they could chew. The winners may be the couple who could overcome their issue the best.
—Huggo