
129 Commonwealth Avenue Boston — Photo 1 of 39
$21,950,000
129 Commonwealth Avenue, Boston, MA 02116
Boston, MA 02116 — Back Bay
Beds
6
Baths
6.5
SqFt
9,624
Style
Single Family
Built
1899
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.
Key facts
It was listed on June 1, 2026. The annual property taxes are $141,208 (2026 tax year). It sits on a 0.07-acre (3,237 sq ft) lot.
Market Value Analysis
* Analysis is based on 24 actively listed and recently sold comparable properties strictly within Boston, MA.
Property Details
Financials
Parking
Interior Specifications
Climate & Utilities
Building & Exterior
Property & Lot
Geography
Property History
$21,950,000
Jun 1, 2026
MLS® 73527728
$45,000
Feb 4, 2026
MLS® 73400044
$45,000
Jul 7, 2025
MLS® 73400044
Questions about this home
When was 129 Commonwealth Avenue, Boston listed?
129 Commonwealth Avenue, Boston was listed on June 1, 2026.
Has the price of 129 Commonwealth Avenue, Boston changed?
The price hasn't changed since it was listed at $21,950,000.
What are the property taxes for 129 Commonwealth Avenue, Boston?
The annual property taxes for 129 Commonwealth Avenue, Boston are $141,208 (2026 tax year).
How big is the lot at 129 Commonwealth Avenue, Boston?
129 Commonwealth Avenue, Boston sits on a 0.07-acre (3,237 sq ft) lot.
What is the status of 129 Commonwealth Avenue, Boston?
129 Commonwealth Avenue, Boston is actively listed for sale.
Population
21,978
U.S. Census Bureau, ACS 2024 5-Year Estimates (B01003)
Median Household Income
$126K
U.S. Census Bureau, ACS 2024 5-Year Estimates (B19013)
Renter-Occupied Homes
65.0%
U.S. Census Bureau, ACS 2024 5-Year Estimates (B25003)
New Construction Permits — Suffolk County
2,337 housing units permitted in the last 12 months (+13% vs the prior 12 months) — 2,062 in 5+ unit buildings
U.S. Census Bureau, Building Permits Survey (through Jul '26)
ADU Potential
Massachusetts allows one accessory dwelling unit by right in single-family zoning districts statewide (M.G.L. c. 40A §3; 760 CMR 71.00, effective Feb 2025). Estimated maximum ADU size for this property: 900 sq ft (the lesser of 900 sq ft or half the 9,624 sq ft principal dwelling). Lot size: 3,237 sq ft.
Based on listing data, which indicates the property type — not the zoning district. Local dimensional, septic (Title 5), and historic-district requirements still apply. Not legal advice — verify with the municipality.
Listing Agent: Jeannemarie Conley
Listing Office: Compass
MLS® Number: 73527728







