Can a Philadelphia rowhouse get a full bathroom on the first floor?

A first-floor bathroom may be an option, but Philadelphia rowhouses vary in footprint, rear additions and previous alterations. A powder room, part of a rear kitchen or dining room, or another appropriate space can be explored with the route to a sleeping area. Available area, plumbing, ventilation, floor framing, supports and Philadelphia L&I approvals must be considered together. The layout, services and structure determine which options are practical.