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18 Commonwealth Ave
Boston, MA, 02116
$22,500,000
5 Beds
6.5 Baths
8,101 SqFt
0.05 Acres
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MLS #73600506 image #0
Open House Nov 11, 2026
04:00 – 05:30
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.

Property Details

Price:
$22,500,000
MLS #:
73600506
Status:
Active
Beds:
5
Baths:
6.5
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
backbay
Listed Date:
Nov 10, 2026
Finished Sq Ft:
8,101
Total Sq Ft:
8,101
Lot Size:
2,178 sqft / 0.05 acres (approx)
Year Built:
1864
Other (see Remarks)Back BayBackbay

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Schools

Interior

Above Grade Finished Area
6697
Appliances
Range, Dishwasher, Refrigerator, Washer, Dryer
Bathrooms
5 Full Bathrooms, 3 Half Bathrooms
Below Grade Finished Area
1404
Cooling
Central Air
Fireplaces Total
3
Flooring
Tile, Hardwood, Stone / Slate
Heating
Hydro Air

Exterior

Architectural Style
Other (See Remarks)
Attached Garage YN
1
Community Features
Public Transportation, Shopping, Park, Walk/Jog Trails, Medical Facility, Highway Access, T-Station, University
Construction Materials
Brick
Covered Spaces
2
Exterior Features
Deck, Deck – Roof
Garage Spaces
2
Open Parking Spaces
2
Open Parking YN
1
Parking Features
Attached, Paved Drive, Off Street, Driveway
Parking Spots
4
Parking Total
4
Patio And Porch Features
Deck, Deck – Roof
Roof
Rubber
Window Features
Insulated Windows

Financial

Tax Year
2026
Taxes
$83,561

Map

Community

Market Summary

Current real estate data for Single Family in Boston as of Nov 10, 2026
404
Single Family Listed
123
Avg DOM
664
Avg $ / SqFt
$1,904,541
Avg List Price

Property Summary

    18 Commonwealth Ave Boston MA is a Single Family for sale in Boston, MA, 02116. It is listed for $22,500,000 and features 5 beds, 7 baths, and has approximately 8,101 square feet of living space, and was originally constructed in 1864. The current price per square foot is $2,777. The average price per square foot for Single Family listings in Boston is $664. The average listing price for Single Family in Boston is $1,904,541. To schedule a showing of MLS#73600506 at 18 Commonwealth Ave in Boston, MA, contact your Cornerstone Real Estate agent at 617-238-7400.

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