9 E 63RD Street, New York City, NY 10065

• 8 beds |
• 9 baths |
• 8,700 sqft

Property Description

9 East 63rd Street is a 25-foot-wide brownstone built in 1879, offering exceptional scale, amazing natural light, and great ceiling heights on every level. The property presents a highly adaptable layout, ideally suited for conversion to a grand single-family residence. Currently configured as a mixed-use property, there are two medical offices, one located in the basement and one on the ground floor. Above, the parlor level features a floor-through apartment with a rear extension and access to a large private terrace. The third and fourth floors are combined as a duplex, with expansive rooms, abundant light, and access to two private terraces. The fifth floor is a full-floor apartment with an efficient layout and an additional rear terrace. With its impressive width, multiple outdoor spaces, and natural vertical flow, the property offers a rare opportunity to be transformed into a cohesive single-family townhouse with expansive entertaining levels and well-proportioned private quarters, all within a classic Upper East Side brownstone.

Listing Status:

Active

Date Added:

May 18, 2026

Data Last Updated:

May 20, 2026 at 3:22AM

Listing Office:

Leslie J Garfield & Co Inc : (212) 371-8200

Listing Agent:

Thomas M Wexler : (212) 448-7474

MLS ID:

RLS20091884

Interior

• General: Smoke Free
• Laundry: Building Other
• Basement: Other
• A/C: Central Air
• Fireplace: OtherFireplaceFireplaces: 7

Exterior

• General: Private Outdoor Space Over 60 Sqft

Construction

• General: 5

Location

• Originating MLS: RLS_REBNY
• County: New York

Lot

• Zoning: 1378-0009
• View: Other

Financial

• Source: RLS_REBNY