Situated amid mature greenery in coveted Wesley Heights, 4430 Lowell Street NW blends New England-inspired architecture with modern sophistication. Designed by Mark Kaufman, AIA, and Stephen Santos, Assoc. AIA, of GTM Architects, built by Matt McFarland of McFarland Woods, and finished by Edith Gregson Interiors, this bespoke residence reflects exceptional craftsmanship throughout. Warm white cedar shake siding, operable shutters, custom Loewen wood-clad windows and doors, and a synthetic slate roof define the exterior. A bluestone walkway leads to a welcoming portico illuminated by a Bevolo gas lantern. The private driveway offers ample turnaround space and a detached one-car garage carriage house with capacity for a car lift. Inside, a marble checkerboard foyer and sculptural elliptical white oak staircase create a striking introduction. The living room features a window seat and custom built-ins, while pocket doors open to the formal dining room. Arched openings, custom millwork, Visual Comfort lighting, and discreetly integrated systems enhance the interiors. A private Symmetry elevator serves all four levels. The chef's kitchen pairs a La Cornue CornuFé 110 range and full-height stone backsplash with a rift white oak island and panel-ready appliances. Farrow & Ball-painted cabinetry conceals Wolf ovens and hidden access to the scullery and mudroom. A sun-filled breakfast nook overlooks the rear yard. The scullery includes a beverage center, Miele dishwasher, hammered unlacquered brass prep sink, and concealed coffee bar. A walk-in pantry and mudroom with closed storage and a covered side entry add everyday convenience. The adjoining family room features a gas fireplace with herringbone firebox detailing, custom built-ins, and access to the covered porch and outdoor kitchen. The second-floor primary suite overlooks the private backyard and offers an expansive customizable walk-in closet with a dressing island. Its spa-inspired bath features radiant heated floors, Viola marble, unlacquered brass Waterworks fixtures, dual vanities, a freestanding tub, bidet toilet, and curbless shower. Three additional bedrooms offer ensuite baths with Kohler x Studio McGee fixtures and walk-in closets, complemented by a laundry room. The top floor provides family and recreation space with cathedral views, plus a generous bedroom suite with a full bath and walk-in closet. The lower level combines entertaining and wellness, with a spacious lounge and custom wet bar featuring a beverage center, ice maker, and dishwasher. A dedicated fitness center and spa include a steam shower, six-person cedar dry sauna, and white oak juice bar with a beverage center, sink, and filtered water tap. A private bedroom suite and second laundry room provide flexibility for guests or multi-generational living. Technology provisions include pre-wiring for sound with concealed main-level Stealth Acoustics speakers, security cameras, and Wi-Fi repeaters, plus an optional lighting control system. The expansive rear yard offers a private retreat, with a patio, covered porch, and fully equipped outdoor kitchen with an integrated beverage center. Planning for an optional custom heated saltwater pool creates an opportunity to further enhance the outdoor setting. Minutes from premier shopping, dining, and cultural destinations, this serene Wesley Heights residence offers an exceptional blend of design, craftsmanship, and everyday livability.