“Long and narrow” often sounds less than ideal for a master bathroom. However, when architect Andrew Mikhael presented his clients with several designs for a new upstairs configuration, they chose the long and narrow master bath option. But that description doesn’t do the brilliant use of space justice. A new dormer let the homeowners maximize existing floor space in this compact Cape Cod–style home by creating some headroom. The dormer fills the open en suite with natural light that’s shared with the bedroom, and it allowed them to create a separate private room for the toilet and shower, so the couple can get ready at the same time in the morning. It also left enough room to create a much-needed guest bathroom.