Description
21 East 81st Street presents a rare and highly unique opportunity on one of the Upper East Side’s most coveted townhouse blocks, perfectly positioned between Fifth and Madison Avenues. Built in 1899 by renowned architects Welch, Smith & Provot, this 20-foot-wide Neoclassical limestone townhouse spans approximately 8,600 square feet across four stories, crowned by a mansard roof. Grand ceiling heights, significant original architectural detail, and wood-burning fireplaces in nearly every room define the interiors, while an elevator services all levels. Currently configured as a two-family residence—an owner’s quadraplex with income producing duplex —the home offers exceptional flexibility and long-term potential which can also can easily be converted to a single family.
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Building Features 5 Floors- Units
elevator
intercom
Unit Features
dishwasher, refrigerator
terrace
fireplace
washerdryer
Exposures: South
Pet Policy: Building No, No
$18,000,000 / $2,108 per ft²
Listed on Feb 10, 2026
81 Days on Market
6 Beds / 5.5 Baths / 8,538 ft²
Total Monthly expenses: $9,682
Maintenance: - / R.E. Taxes $9,682
Other Details:
Two Family
Lot Size: 19.83' x 102.17' Built: 19.83' x 66.0'
Zoning: B1-9
Exclusively listed with: Compass Source: RLS
Listing Courtesy of Compass
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Unit listing history
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