While working with Case Architects & Remodelers on a whole-house renovation in Bethesda, clients requested an overhaul of their outmoded primary suite. Along with other improvements, they envisioned a bathroom update that would “create an oasis,” recalls Case lead designer Allie Mann.

The plan tackled an assortment of angled walls and soffits that made the existing bath dated and cramped. “We squared off door entries to the WC and the shower, which felt like a cave with minimal glass,” Mann recounts. The dark, angled shower gave way to a sleek, glassed-in version, both roomier and better situated. A sculptural soaking tub replaced a built-in tub with stair entry; this change removed unnecessary soffits, allowing the facing vanities—which flank the tub—to be extended for increased storage and surface area. The water closet’s footprint was expanded to accommodate a shallow linen closet at one end.

Mann and her team imparted a spa feel to the space with white cabinetry, white quartz vanity tops and brushed-gold fixtures and hardware. Large-format, marble-look porcelain tile lines the floor and shower enclosure, where teak-look floor tile provides contrast. Vanity backsplashes showcase a decorative-leaf marble mosaic that climbs to the ceiling.