Single Family Residence at 129 Commonwealth Avenue, Boston
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42 photos

$19,995,000

Bedrooms
6
Bathrooms
6.5
Living area
9,624 sqft
Year built
1899
129 Commonwealth Avenue
Boston, MA 02116
Listed by Jeannemarie Conley

Highlights

Property type
Single Family Residence
Lot size
0.07 acres
On market
155 days
  • Fireplace

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.

Property details

MLS
MLS Property Information Network
MLS #
73527728
Property type
Single Family Residence
Subdivision
N/A
Status
Active
Days on market
155
On market date
June 1, 2026
Stories
N/A
Total bathrooms
6.5
Garage spaces
N/A
Parking spaces
6
Lot size
0.07 acres
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Josiah Quincy
0.74 mi away · Grades -1-5
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
711
Student:teacher ratio
10.9:1
District
Boston
Middle
Cambridge Street Upper School
1.52 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
279
Student:teacher ratio
7.5:1
District
Cambridge
High
Snowden International School at Copley
0.13 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
4.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
485
Student:teacher ratio
12.8:1
District
Boston

Walkability

Blended score for Boston's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

84
Highly walkable
out of 100
EPA National Walkability Index
14.7 / 20 -- Above average walkable
Google Places amenity density
100 / 100
Restaurants & cafes20
Grocery stores20
Parks20
Schools20
Transit stops20
Pharmacies20

Market position

How this listing compares to current activity in Boston, from live MLS data.

On the market 155 days -- 18 more days than Boston's current average of 137 days.
For reference, the median list price across 9,348 active listings in Boston right now is $65,000.

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

Adjust tax / insurance estimates
Est. monthly payment
$120,562/mo
$3,999,000 down
$15,996,000 loan
Principal & interest$103,750
Property tax (est.)$16,663
Home insurance (est.)$150

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Data source: Listing information provided by MLS Property Information Network. Last updated 8 days ago.

Information herein deemed reliable but not guaranteed; all measurements, school assignments, HOA fees, taxes, and feature lists are approximate and should be independently verified. Equal Housing Opportunity.