This renovated single-family townhouse offers a rare convergence of architectural rigor, environmental performance, and refined luxury, ideally located on a prime park block. Offering approximately 6,035 square feet of interior living space and over 1,400 square feet of private outdoor areas on an 18 ft x 102 ft lot, the residence is defined by tall windows on every level that flood the home with natural light, while a dramatic double-height ceiling on the garden floor creates a striking sense of volume and openness. Four distinct outdoor spaces further enhance the seamless connection between interior and exterior living. The elevator serves each level of this townhouse. This townhouse has undergone a meticulous, multi-year renovation by Baxt/Ingui Architects, resulting in a residence of exceptional flow, continuity, and technical sophistication. Fully certified as a Passive House, the property is completely sealed against drafts, delivering superior energy efficiency, remarkable sound insulation, and outstanding indoor air quality. A state-of-the-art ventilation system continuously circulates tempered fresh air throughout the home, while triple-glazed, landmark-approved Passive House-certified windows preserve warmth, quiet, and architectural elegance year-round. Garden Level Entered beneath the stoop, the garden level opens to a welcoming, entertaining room. At the rear, the kitchen is defined by a grand double-height ceiling and floor-to-ceiling glass overlooking the garden. Appointed with top-of-the-line appliances by Sub-Zero, Wolf, and Gaggenau, a wine refrigerator, and a large Caesarstone island with seating, the kitchen balances beauty and functionality. A powder room and a walk-in closet suitable for use as a pantry complete the level. The kitchen opens directly to the private garden, ideal for both everyday living and entertaining. Parlour Level Accessed via a newly restored, historically restored stoop, the parlour level features a gracious living room with eleven-foot ceilings and an Eco Hearth fireplace. At the rear, a light-filled dining room offers open sightlines to the garden and includes a secondary staircase that connects directly to the kitchen below, creating a seamless flow for entertaining. Third Level- Primary Suite The entire third level is dedicated to the primary bedroom suite. A spa-like bath clad in Bianco Carrara and Thassos marble occupies the front of the level and is separated from the bedroom by two walk-in closets. The bedroom features white oak floors, a wet bar, and a quiet reading nook overlooking the garden. French doors open to a private balcony. Fourth Level Two well-proportioned rooms occupy the fourth level, equally suited as bedrooms, offices, or studios. The front room includes a wet bar, while the rear room opens onto a private roof deck. Both rooms feature white oak floors, ample closet space, and share a Statuary marble bath. Fifth Level The fifth level offers two additional full-sized bedrooms, each with its own en-suite bath. A secondary washer and dryer on this level adds convenience and flexibility. Rooftop A glassed-in roof deck crowns the home, providing an exceptional setting for entertaining or a quiet retreat with open views of the neighborhood. The roof is accessible via the elevator. Cellar Level The finished cellar features high ceilings and functions easily as a recreation room, gym, or additional living space. This level includes a laundry room, powder room, and updated mechanical and electrical systems.