[jyl]

Actually, one sink will be “hers” (wife) and the other will also be “hers” (daughter). I’ve already been pushed out to the half-bath on the ground floor, and am periodically chastised for having my stuff in view of the guests who might be offended by the sight of it.

Oregon Plumbing Code permits two sinks on one trap, with conditions

"One trap shall be permitted to serve a set of not more than three single compartment sinks or laundry tubs of the same depth or three lavatories immediately adjacent to each other and in the same room where the waste outlets are not more than 30 inches (762 mm) apart, and the trap is centrally located where three compartments are installed."