129 Commonwealth Avenue, Boston MA 02116
Boston, MA 02116 • Back Bay
$21,950,000
Est. $122,958/month
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About this home
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 façade, 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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Recently Sold Nearby
Property History
Property Timeline
Listed for Sale
Jun 1, 2026
$21,950,000
Original listing
Agent: Jeannemarie Conley
Office: Compass
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 06/01/2026 | 🏠 Listed for Sale | $21,950,000 | - | - | Original listing |
Tax History
| Year | Taxes | Assessment |
|---|---|---|
| 2026 | $141,208 | $11,276,000 |
Financial Details
Annual Property Tax
$141,208
Tax Year 2026
Assessed Value
$11,276,000
Facts & Features
Central AC
Home Facts
Type
Residential
Style
Single Family Residence
Year Built
1899
Living Area
9,624 sq ft
Lot Size
0.07 acres
Bedrooms
6
Full Baths
5
Half Baths
3
Total Rooms
11
Interior
Heating
Central
Cooling
Central Air
Flooring
Wood, Marble
Appliances
None
Fireplace
None
Fireplaces
8
Basement
None
Laundry
None
Features
None
Exterior
Construction
Brick
Architecture
None
Roof
Rubber
Features
Deck - Roof, Balcony
Pool
None
Spa
None
Fencing
None
Patio/Porch
Deck - Roof
Parking
Features
Off Street, Deeded
Total Spaces
6
Utilities
Electric
None
Water
Public
Sewer
Public Sewer
Gas
None
Other
None
Financial
Annual Tax
$141,208
Assessed Value
$11,276,000
HOA & Community
Fee Includes
None
Amenities
None
Optional Fee Includes
None
MA Disclosures
Seller Disclosures
Some Photos Virtually Staged.
Additional Details
Possession
None
Accepted Financing
None
Structure Type
[]
Sq Ft Source
Public Record
Sq Ft Disclosures
Square footage is gross
Documents
None
County
Suffolk
Total market time (incl. prior listings)
4 days
Property Overview
Property Type
Single Family Residence
Listing Type
For Sale
Year Built
1899
Bedrooms
6
Full Bathrooms
5
Half Bathrooms
3
Living Area
9,624 sq ft
Total Rooms
11
Levels
Multi/Split
Floor Layout
Interactive room guide
Floor Layout
Finished Area
9,124 sq ft above grade
500 sq ft below grade
FeaturesYes
Display Options
Outdoor Areas
Patio & porchDeck - Roof
Room Markers
BABathroom (4)
BRBedroom (5)
DDining (1)
KKitchen (1)
LLiving (2)
OOffice (1)
Conceptual diagram based on MLS room data. It is not to scale and is not a substitute for architectural plans or on-site measurements.
Interior Features
Flooring:
Wood, Marble
Appliances:
Interior Features:
Windows:
Basement:
Laundry:
Security:
Construction & Materials
Year Built:
1899
Structure Type:
Exterior Materials:
Brick
Roof:
Rubber
Foundation:
Other
Heating, Cooling & Utilities
Heating:
Central
Cooling:
Central Air
Hot Water:
Water Source:
Public
Sewer:
Public Sewer
Energy Features:
Exterior & Lot
Exterior Features:
Deck - Roof, Balcony
Patio & Porch:
Deck - Roof
Fencing:
Other Structures:
Lot Features:
Other
Road Surface:
Parking & Garage
Total Parking Spaces:
6
Parking Features:
Off Street, Deeded
Special Features
Fireplaces:
8
Fireplace Type:
Community Amenities:
Nearby Schools
School District
Boston School District local
C-
Where Graduates Go
Class of 2021
52%
attend college
38%
4-Year
14%
2-Year
7%
Out of State
7%
Working
School Safety
2024-25
3.7%
Above Average
3.2%
Suspensions
0.3%
In-School
0.5%
Emergency
1.8% below state avg
Elementary Schools
3 schools
The Learning Project
< 0.1 mi
Grades K-06
Kingsley Montessori School
0.3 mi
Grades PK-06
Park Street School
0.4 mi
Grades K-07
Middle Schools
1 school
B+
Darby Vassall Upper School
1.3 mi
|
#118 of 352
|
Score: 47.5
Improved 26 spots from last year
-10.7 below state avg
298 students
Very Diverse
Rising School
Diverse Student Body
Grades 06-08
High Schools
3 schools
Commonwealth School
< 0.1 mi
Grades 09-12
C-
Snowden International High School
0.1 mi
|
#301 of 346
|
Score: 37.9
Improved 55 spots from last year
-20.3 below state avg
421 students
Diverse
7 sports
• 78 athletes
Rising School
Grades 09-12
Snowden International
0.1 mi
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Down: $0
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Monthly Payment Breakdown
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Property Tax
$11,767
Homeowners Insurance
$200
PMI (if <20% down)
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Loan Summary
Total of 360 payments
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Payment Over Time
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
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Location
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Neighborhood
Back Bay
129 Commonwealth Avenue, Boston MA 02116
Boston, MA 02116
Listing Information
Listing Office
Compass
Office Phone
617-206-3333
Agent MLS ID
BB804137
Office MLS ID
AN2383
Listing Data Updated
Jun 5, 2026 3:05 AM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.
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