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21 E 81st StreetNew York City, NY 10028Price: $18,000,000

  • Price: $18,000,000
  • Est. Mortgage of $/month
  • 126 Days on Market
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Federal 30-year interest rate: 6.53% last updated on May 28, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
This product uses the FRED® API but is not endorsed or certified by the Federal Reserve Bank of St. Louis.
  • $18,000,000List Price
  • 6Bedrooms
  • 6Bathrooms
  • 8,538Square Feet

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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.

Property Details of 21 E 81st Street

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Listed by Jennifer E Regenstreich of Compass

This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., All rights reserved. RLS Data display by Geoffrey Gottlieb.

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