A bathroom module is disclosed. The bathroom module comprises a shower area, a toilet area, a grooming area, and plumbing inlet lines. The shower area comprises a shower head, a control valve assembly, and a drain. The toilet area comprises a toilet assembly. The toilet area and the shower area are separated from each other by a first wall. The grooming area comprises a sink assembly that comprises a faucet. The grooming area is separated from the shower area and the toilet area by a second wall. The second wall is substantially perpendicular to the first wall. Plumbing inlet lines are disposed within the first wall and the second wall and configured to supply water to the control valve assembly, the shower head, the toilet assembly, and the faucet.