129 Commonwealth Avenue, Back BayBoston, MA 02116MLS Number 73527728

  • Price: $21,950,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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Federal 30-year interest rate: 6.53% last updated on May 28, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
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  • 6Bedrooms
  • 0.07Acreage
  • 8Bathrooms
  • 1899Year Built
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129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116129 Commonwealth Avenue Boston MA 02116
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Cape Coastal Sotheby's International Realty

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Cape Coastal Sotheby's International Realty
Office: 508-477-6688
540 Falmouth Road (Mashpee Rotary)
Mashpee, MA 02649
Exquisite, wide Back Bay townhouse on the sunny side of Commonwealth with large private roof deck, magnificent views, Juliet balcony, and 6 outdoor parking showcases exceptional bones and timeless character. Expansive windows provide outstanding natural light, highlighting the home's historic charm and original detail. The property offers a versatile floor plan for customization, with approximately 10,000+/-sf to create luxurious spaces and exceptional entertaining space. Currently exhibiting an open and airy kitchen, soaring ceilings, a stately dining room, beautiful paneled library, 5+ well-proportional bedrooms, abundant closets, and a separate au pair suite, it is one of only a few single family homes in this highly coveted neighborhood. Its distinguished faade, irreplaceable location, and palatial scale present an extraordinary canvas for a discerning buyer. Elevator to all floors, 8 fireplaces, and grandeur complete this home’s spectacular offering. Some photos virtually staged.

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Basic Information

  • Bedrooms6
  • Mls StatusNew
  • Bathroom8
  • Lot Features Other
  • Parcel Number 3351981

Location

  • NeighborhoodBack Bay
  • SubdivisionBack Bay
  • Address129 Commonwealth Avenue
  • Building Number129
  • CountySuffolk
  • StateMA
  • StreetCommonwealth Avenue
  • TownBoston
  • Zip02116

Utilities

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

Tax Information

  • Tax Assessed Value $11,276,000
  • Tax Year 2026
  • Taxes$141,208

Basic Information

  • List Price$21,950,000
  • MLSPIN 73527728
  • Modification Date06/01/2026
  • Property SubTypeSingle Family Residence

Property

  • Acreage0.07

Interior

  • Flooring Wood, Marble

Exterior

  • Exterior Features Deck - Roof, Balcony
  • RoofRubber

Property Information

  • Square Feet9,624
  • Building Area Source Public Records
  • Living Area 9,624
  • Lot Size Square Feet 3,237
  • Lot Size Units Acres
  • Property Attached YN Yes

Parking

  • Parking Spaces6
  • Parking Features Off Street, Deeded

Rooms

  • Bathrooms Total Decimal 6.5
  • Full Bath5
  • Half Baths3

Building

  • Building Area Units Square Feet
  • Construction Materials Brick
  • FireplaceYes
  • Fireplaces Total 8
  • FoundationOther
  • Levels Multi/Split
  • Patio And Porch Features Deck - Roof
  • Rooms11
  • Year Built1899
  • Year Built Details Approximate
  • Year Built Source Public Records

Legal

  • ZoningRes

Other

  • Date Listed06/01/2026
  • Farm Land Area Units Square Feet
  • View Count1

Driving Directions

Listed by Jeannemarie Conley of Compass

Back Bay Boston, MA Demographics

There is no data available

Back Bay Boston, MA Real Estate Market Data

There is no data available

Back Bay Boston, MA Schools

School NameDistanceTypeGrades

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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