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21 Walnut, Unit M, Beacon HillBoston, MA 02108Price: $1,800,000

  • Price: $1,800,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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Federal 30-year interest rate: 6.49% last updated on Jul 9, 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.
  • $1,800,000List Price
  • 3Bedrooms
  • 2Bathrooms
  • 0.02Acreage
  • 1,038Square Feet

1-3 Chestnut Street

21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108
21 Walnut Boston MA 02108

Listing Tools

Listed by Rebecca Davis Tulman and Leslie Singleton Adam of Gibson Sotheby's International Realty
Just off iconic Chestnut Street, this exceptional Beacon Hill maisonette offers the rare combination of a private entrance, lush landscaped garden, and secluded patio in the coveted South Slope. Rich in architectural detail and filled with natural light from abundant windows and skylights, this elegant duplex lives like a private townhouse. The fireplaced living room opens to the private terrace, while the beautifully updated kitchen features stone countertops, custom cabinetry, and stainless appliances. A spacious den overlooking the garden provides an ideal home office or dining area. Upstairs are two generous skylit bedrooms, including a tranquil primary suite with large closets and a marble bath with radiant heated floors. Hardwood floors, Miele washer/dryer, air conditioning, and deeded storage complete this rare offering, just moments from Boston Common, the Public Garden, the Charles River,Esplanade and all and restaurants along nearby Charles St and the Back Bay.

Property Details of 21 Walnut, Unit M, Beacon Hill

Property Details

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