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Situated on the coveted first block of Commonwealth Avenue, steps from the Public Garden, the historic Ward Mansion blends architectural grandeur with modern luxury. Built in 1864 and meticulously restored, this approximately 8,100-square-foot single-family offers six elevator-served levels, five en-suite bedrooms, and three powder rooms. Exquisite interiors feature custom millwork, quartersawn white oak floors, ornamental ironwork, and exceptional marble. A chef’s kitchen showcases Calacatta Vagli marble, Wolf and Sub-Zero appliances, and dual Cove dishwashers. Elegant living and dining rooms, a private library, and multiple fireplaces offer refined entertaining. The full-floor primary suite features dual dressing rooms and a marble bath with steam shower. An au pair suite and top-floor lounge with kitchenette and wine storage add versatility. A private roof deck with outdoor kitchen and skyline views, two-car garage, two additional parking spaces, and heated exterior pavers complete this rare Back Bay offering.

More Info

Basic Information

  • Bedrooms5
  • Mls StatusNew
  • Bathroom8
  • Parcel Number W:05 P:01219 S:000,3358357

Tax Information

  • Tax Assessed Value $6,738,800
  • Tax Year 2026
  • Taxes$83,561

Parking

  • Parking Spaces4
  • Covered Spaces 2
  • Garage YN Yes
  • Open Parking YN Yes
  • Parking Features Attached, Paved Drive, Off Street, Driveway

Rooms

  • Bathrooms Total Decimal 6.5
  • Full Bath5
  • Half Baths3

Basic Information

  • List Price$22,500,000
  • MLS Number73600506
  • Modification Date11/10/2026
  • Property SubTypeSingle Family Residence
  • Virtual TourView Tour

Location

  • NeighborhoodBack Bay
  • SubdivisionBack Bay
  • Address18 Commonwealth Avenue
  • Building Number18
  • CountySuffolk
  • StateMA
  • StreetCommonwealth Avenue
  • TownBoston
  • Zip02116

Building

  • Attached Garage YN Yes
  • BasementFinished
  • Building Area Units Square Feet
  • Construction Materials Brick
  • Door Features Insulated Doors
  • FireplaceYes
  • Fireplaces Total 3
  • FoundationConcrete Perimeter, Brick/Mortar
  • Garage Spaces2
  • Patio And Porch Features Deck, Deck - Roof
  • Property StyleOther (See Remarks)
  • Rooms15
  • Utilities For Gas Range
  • Window Features Insulated Windows
  • Year Built1864
  • Year Built Details Renovated Since, Finished, Never Occupied
  • Year Built Source Public Records

Property

  • Acreage0.05

Interior

  • Flooring Tile, Hardwood, Stone / Slate

Exterior

  • Exterior Features Deck, Deck - Roof
  • RoofRubber

Utilities

  • Cooling Central Air
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Hydro Air
  • Sewer Public Sewer
  • Water Source Public

Property Information

  • Square Feet8,101
  • Building Area Source Measured
  • Living Area 8,101
  • Lot Size Square Feet 2,178
  • Lot Size Units Acres
  • Property Attached YN Yes

Amenities

  • Amenities
    • Highway Access
    • Medical Facility
    • Park
    • Public Transportation
    • Shopping
    • T-Station
    • University
    • Walk/Jog Trails
  • Appliances IncludedRange, Dishwasher, Refrigerator, Washer, Dryer

Legal

  • ZoningA

Other

  • Date Listed11/10/2026
  • Farm Land Area Units Square Feet
  • Other Equipment Intercom
  • View Count2

Map Location

Driving Directions

Listed by Joshua Stephens of Berkshire Hathaway HomeServices Warren Residential

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