21 Walnut, Unit M, Beacon HillBoston, MA 02108MLS Number 73591995

  • Price: $1,695,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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Federal 30-year interest rate: 7.4% last updated on Oct 15, 2026
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Open House
21 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 0210821 Walnut Boston MA 02108
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  • 2Bedrooms
  • 0.02Acreage
  • 2Bathrooms
  • 1875Year Built

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Just off iconic Chestnut Street, this exceptional Beacon Hill maisonette offers the rare combination of a private entrance, 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 Esplanade and all the shops and restaurants along Charles St.

Open Houses

October 18th
Starts: 10:30am
Ends: 12:00pm
Listed by Rebecca Davis Tulman and Leslie Singleton Adam of Gibson Sotheby's International Realty

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More Info

Basic Information

  • Bedrooms2
  • Mls StatusNew
  • Bathroom2
  • Lot Features Corner Lot
  • Parcel Number W:05 P:01573 S:006,1437388
  • Unit NumberM

Location

  • NeighborhoodBeacon Hill
  • SubdivisionBeacon Hill
  • Address21 Walnut
  • Building Number21
  • CountySuffolk
  • StateMA
  • StreetWalnut
  • TownBoston
  • Zip02108

Utilities

  • Cooling Heat Pump
  • Cooling YN Yes
  • Electric 110 Volts
  • Heat SystemYes
  • Heating Baseboard
  • Sewer Public Sewer
  • Water Source Public

Amenities

  • Amenities
    • Bike Path
    • Conservation Area
    • Highway Access
    • Medical Facility
    • Park
    • Public Transportation
    • Shopping
    • T-Station
    • Tennis Court(s)
    • Walk/Jog Trails

Tax Information

  • Tax Assessed Value $1,458,100
  • Tax Year 2025
  • Taxes$16,885

Basic Information

  • List Price$1,695,000
  • MLS Number73591995
  • Modification Date10/16/2026
  • Property SubTypeSingle Family Residence

Building

  • Building Area Units Square Feet
  • Construction Materials Brick
  • Door Features French Doors
  • FireplaceYes
  • Fireplace Features Living Room
  • Fireplaces Total 1
  • FoundationBrick/Mortar
  • Property StyleOther (See Remarks)
  • Rooms5
  • Year Built1875
  • Year Built Details Actual
  • Year Built Source Public Records

Other

  • Date Listed10/16/2026
  • Farm Land Area Units Square Feet
  • Other Equipment Intercom

Parking

  • Parking Spaces

Rooms

  • Bathroom 1 Second,9 x 6
  • Bathroom 2 Second,6 x 5
  • Bathrooms Total Decimal 2
  • Bedroom 2 Second,9 x 13
  • Dining Room First,11 x 14
  • Full Bath2
  • Kitchen First,11 x 15
  • Living Room First,12 x 18
  • Master Bedroom Second,14

Property

  • Acreage0.02

Interior

  • Flooring Flooring - Stone/Ceramic Tile
  • Interior Features Closet, Entrance Foyer

Property Information

  • Square Feet1,038
  • Building Area Source Public Records
  • Living Area 1,038
  • Lot Size Square Feet 1,038
  • Lot Size Units Acres
  • Property Attached YN Yes

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The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLSPIN and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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