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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.

More Info

Basic Information

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

Tax Information

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

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

Basic Information

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

Location

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

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

Property

  • Acreage0.02

Interior

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

Utilities

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

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

Amenities

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

Legal

  • ZoningCD

Other

  • Date Listed10/16/2026
  • Farm Land Area Units Square Feet
  • Other Equipment Intercom
  • View Count5

Map Location

Driving Directions

Listed by Rebecca Davis Tulman and Leslie Singleton Adam of Gibson Sotheby's International Realty

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